48 files changed, 2535 insertions, 566 deletions

diff --git a/OpenSim/Region/ScriptEngine/Interfaces/IScriptApi.cs b/OpenSim/Region/ScriptEngine/Interfaces/IScriptApi.cs
index 2027ca6..30e99b0 100644
--- a/OpenSim/Region/ScriptEngine/Interfaces/IScriptApi.cs
+++ b/OpenSim/Region/ScriptEngine/Interfaces/IScriptApi.cs
@@ -26,9 +26,11 @@
  */
 
 using System;
+using System.Threading;
 using OpenMetaverse;
 using OpenSim.Framework;
 using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.ScriptEngine.Shared;
 
 namespace OpenSim.Region.ScriptEngine.Interfaces
 {
@@ -38,11 +40,12 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
         /// Initialize the API
         /// </summary>
         /// <remarks>
-        /// Each API has an identifier, which is used to load the
-        /// proper runtime assembly at load time.
-        /// <param name='engine'>/param>
-        /// <param name='part'></param>
-        /// <param name='item'></param>
-        void Initialize(IScriptEngine engine, SceneObjectPart part, TaskInventoryItem item);
+        /// Each API has an identifier, which is used to load the proper runtime assembly at load time.
+        /// <param name='scriptEngine'>/param>
+        /// <param name='host'>/param>
+        /// <param name='item'>/param>
+        /// <param name='coopSleepHandle'>/param>
+        void Initialize(
+            IScriptEngine scriptEngine, SceneObjectPart host, TaskInventoryItem item, WaitHandle coopSleepHandle);
     }
 }
\ No newline at end of file
diff --git a/OpenSim/Region/ScriptEngine/Interfaces/IScriptEngine.cs b/OpenSim/Region/ScriptEngine/Interfaces/IScriptEngine.cs
index 17c2708..b8fdd01 100644
--- a/OpenSim/Region/ScriptEngine/Interfaces/IScriptEngine.cs
+++ b/OpenSim/Region/ScriptEngine/Interfaces/IScriptEngine.cs
@@ -25,16 +25,17 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-using log4net;
 using System;
-using OpenSim.Region.ScriptEngine.Shared;
+using System.Reflection;
+using OpenSim.Framework;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.Framework.Interfaces;
-using OpenMetaverse;
-using Nini.Config;
 using OpenSim.Region.ScriptEngine.Interfaces;
+using OpenSim.Region.ScriptEngine.Shared;
 using Amib.Threading;
-using OpenSim.Framework;
+using log4net;
+using Nini.Config;
+using OpenMetaverse;
 
 namespace OpenSim.Region.ScriptEngine.Interfaces
 {
@@ -76,6 +77,38 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
         IConfigSource ConfigSource { get; }
         string ScriptEngineName { get; }
         string ScriptEnginePath { get; }
+
+        /// <summary>
+        /// Return the name of the class that will be used for all running scripts.
+        /// </summary>
+        /// <remarks>
+        /// Each class goes in its own assembly so we don't need to otherwise distinguish the class name.
+        /// </remarks>
+        string ScriptClassName { get; }
+
+        /// <summary>
+        /// Return the name of the base class that will be used for all running scripts.
+        /// </summary>
+        string ScriptBaseClassName { get; }
+
+        /// <summary>
+        /// Assemblies that need to be referenced when compiling scripts.
+        /// </summary>
+        /// <remarks>
+        /// These are currently additional to those always referenced by the compiler, BUT THIS MAY CHANGE IN THE 
+        /// FUTURE.
+        /// This can be null if there are no additional assemblies.
+        /// </remarks>
+        string[] ScriptReferencedAssemblies { get; }
+
+        /// <summary>
+        /// Parameters for the generated script's constructor.
+        /// </summary>
+        /// <remarks>
+        /// Can be null if there are no parameters
+        /// </remarks>
+        ParameterInfo[] ScriptBaseClassParameters { get; }
+
         IScriptApi GetApi(UUID itemID, string name);
     }
 }
diff --git a/OpenSim/Region/ScriptEngine/Interfaces/IScriptInstance.cs b/OpenSim/Region/ScriptEngine/Interfaces/IScriptInstance.cs
index b04f6b6..35ae44c 100644
--- a/OpenSim/Region/ScriptEngine/Interfaces/IScriptInstance.cs
+++ b/OpenSim/Region/ScriptEngine/Interfaces/IScriptInstance.cs
@@ -28,9 +28,11 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Threading;
 using OpenMetaverse;
 using log4net;
 using OpenSim.Framework;
+using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.ScriptEngine.Shared;
 using OpenSim.Region.ScriptEngine.Interfaces;
 
@@ -50,7 +52,12 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
     {
         bool Cancel();
         void Abort();
-        bool Wait(TimeSpan t);
+
+        /// <summary>
+        /// Wait for the work item to complete.
+        /// </summary>
+        /// <param name='t'>The number of milliseconds to wait.  Must be >= -1 (Timeout.Infinite).</param>
+        bool Wait(int t);
     }
 
     /// <summary>
@@ -59,6 +66,18 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
     public interface IScriptInstance
     {
         /// <summary>
+        /// Debug level for this script instance.
+        /// </summary>
+        /// <remarks>
+        /// Level == 0, no extra data is logged.
+        /// Level >= 1, state changes are logged.
+        /// Level >= 2, event firing is logged.
+        /// <value>
+        /// The debug level.
+        /// </value>
+        int DebugLevel { get; set; }
+
+        /// <summary>
         /// Is the script currently running?
         /// </summary>
         bool Running { get; set; }
@@ -93,6 +112,11 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
         /// </summary>
         long MeasurementPeriodExecutionTime { get; }
 
+        /// <summary>
+        /// Scene part in which this script instance is contained.
+        /// </summary>
+        SceneObjectPart Part { get; }
+
         IScriptEngine Engine { get; }
         UUID AppDomain { get; set; }
         string PrimName { get; }
@@ -112,8 +136,24 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
 
         uint LocalID { get; }
         UUID AssetID { get; }
+
+        /// <summary>
+        /// Inventory item containing the script used.
+        /// </summary>
+        TaskInventoryItem ScriptTask { get; }
+
         Queue EventQueue { get; }
 
+        /// <summary>
+        /// Number of events queued for processing.
+        /// </summary>
+        long EventsQueued { get; }
+
+        /// <summary>
+        /// Number of events processed by this script instance.
+        /// </summary>
+        long EventsProcessed { get; }
+
         void ClearQueue();
         int StartParam { get; set; }
 
@@ -125,7 +165,13 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
         /// <summary>
         /// Stop the script instance.
         /// </summary>
+        /// <remarks>
+        /// This must not be called by a thread that is in the process of handling an event for this script.  Otherwise
+        /// there is a danger that it will self-abort and not complete the reset.
+        /// </remarks>
         /// <param name="timeout"></param>
+        /// How many milliseconds we will wait for an existing script event to finish before
+        /// forcibly aborting that event.
         /// <returns>true if the script was successfully stopped, false otherwise</returns>
         bool Stop(int timeout);
 
@@ -147,8 +193,31 @@ namespace OpenSim.Region.ScriptEngine.Interfaces
         object EventProcessor();
 
         int EventTime();
-        void ResetScript();
+
+        /// <summary>
+        /// Reset the script.
+        /// </summary>
+        /// <remarks>
+        /// This must not be called by a thread that is in the process of handling an event for this script.  Otherwise
+        /// there is a danger that it will self-abort and not complete the reset.  Such a thread must call
+        /// ApiResetScript() instead.
+        /// </remarks>
+        /// <param name='timeout'>
+        /// How many milliseconds we will wait for an existing script event to finish before
+        /// forcibly aborting that event prior to script reset.
+        /// </param>
+        void ResetScript(int timeout);
+
+        /// <summary>
+        /// Reset the script.
+        /// </summary>
+        /// <remarks>
+        /// This must not be called by any thread other than the one executing the scripts current event.  This is 
+        /// because there is no wait or abort logic if another thread is in the middle of processing a script event.
+        /// Such an external thread should use ResetScript() instead.
+        /// </remarks>
         void ApiResetScript();
+
         Dictionary<string, object> GetVars();
         void SetVars(Dictionary<string, object> vars);
         DetectParams GetDetectParams(int idx);
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/CM_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/CM_Api.cs
index b5fa6de..fce8ff8 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/CM_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/CM_Api.cs
@@ -26,6 +26,7 @@
  */
 
 using System;
+using System.Threading;
 using System.Reflection;
 using System.Collections;
 using System.Collections.Generic;
@@ -62,7 +63,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         internal TaskInventoryItem m_item;
         internal bool m_CMFunctionsEnabled = false;
 
-        public void Initialize(IScriptEngine ScriptEngine, SceneObjectPart host, TaskInventoryItem item)
+        public void Initialize(IScriptEngine ScriptEngine, SceneObjectPart host, TaskInventoryItem item, WaitHandle coopSleepHandle)
         {
             m_ScriptEngine = ScriptEngine;
             m_host = host;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 7be64eb..4a24d22 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -48,6 +48,7 @@ using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.Framework.Scenes.Serialization;
 using OpenSim.Region.Framework.Scenes.Animation;
+using OpenSim.Region.Framework.Scenes.Scripting;
 using OpenSim.Region.Physics.Manager;
 using OpenSim.Region.ScriptEngine.Shared;
 using OpenSim.Region.ScriptEngine.Shared.Api.Plugins;
@@ -87,10 +88,17 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
     public class LSL_Api : MarshalByRefObject, ILSL_Api, IScriptApi
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
         protected IScriptEngine m_ScriptEngine;
         protected SceneObjectPart m_host;
 
         /// <summary>
+        /// Used for script sleeps when we are using co-operative script termination.
+        /// </summary>
+        /// <remarks>null if co-operative script termination is not active</remarks>  
+        WaitHandle m_coopSleepHandle;       
+
+        /// <summary>
         /// The item that hosts this script
         /// </summary>
         protected TaskInventoryItem m_item;
@@ -100,6 +108,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         protected float m_ScriptDelayFactor = 1.0f;
         protected float m_ScriptDistanceFactor = 1.0f;
         protected float m_MinTimerInterval = 0.5f;
+        protected float m_recoilScaleFactor = 0.0f;
 
         protected DateTime m_timer = DateTime.Now;
         protected bool m_waitingForScriptAnswer = false;
@@ -141,33 +150,31 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                         {"TURNRIGHT", "Turning Right"}
                 };
 
-        public void Initialize(IScriptEngine ScriptEngine, SceneObjectPart host, TaskInventoryItem item)
+        public void Initialize(
+            IScriptEngine scriptEngine, SceneObjectPart host, TaskInventoryItem item, WaitHandle coopSleepHandle)
         {
-/*
-            m_ShoutSayTimer = new Timer(1000);
-            m_ShoutSayTimer.Elapsed += SayShoutTimerElapsed;
-            m_ShoutSayTimer.AutoReset = true;
-            m_ShoutSayTimer.Start();
-*/
             m_lastSayShoutCheck = DateTime.UtcNow;
 
-            m_ScriptEngine = ScriptEngine;
+            m_ScriptEngine = scriptEngine;
             m_host = host;
             m_item = item;
             m_debuggerSafe = m_ScriptEngine.Config.GetBoolean("DebuggerSafe", false);
+            m_coopSleepHandle = coopSleepHandle;
 
-            LoadLimits();  // read script limits from config.
+            LoadConfig();
 
             m_TransferModule =
                     m_ScriptEngine.World.RequestModuleInterface<IMessageTransferModule>();
             m_UrlModule = m_ScriptEngine.World.RequestModuleInterface<IUrlModule>();
             m_SoundModule = m_ScriptEngine.World.RequestModuleInterface<ISoundModule>();
 
-            AsyncCommands = new AsyncCommandManager(ScriptEngine);
+            AsyncCommands = new AsyncCommandManager(m_ScriptEngine);
         }
 
-        /* load configuration items that affect script, object and run-time behavior. */
-        private void LoadLimits()
+        /// <summary>
+        /// Load configuration items that affect script, object and run-time behavior. */
+        /// </summary>
+        private void LoadConfig()
         {
             m_ScriptDelayFactor =
                 m_ScriptEngine.Config.GetFloat("ScriptDelayFactor", 1.0f);
@@ -181,12 +188,18 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 m_ScriptEngine.Config.GetInt("NotecardLineReadCharsMax", 255);
             if (m_notecardLineReadCharsMax > 65535)
                 m_notecardLineReadCharsMax = 65535;
+
             // load limits for particular subsystems.
             IConfig SMTPConfig;
             if ((SMTPConfig = m_ScriptEngine.ConfigSource.Configs["SMTP"]) != null) {
                 // there's an smtp config, so load in the snooze time.
                 EMAIL_PAUSE_TIME = SMTPConfig.GetInt("email_pause_time", EMAIL_PAUSE_TIME);
             }
+
+            // Rezzing an object with a velocity can create recoil. This feature seems to have been
+            //    removed from recent versions of SL. The code computes recoil (vel*mass) and scales
+            //    it by this factor. May be zero to turn off recoil all together.
+            m_recoilScaleFactor = m_ScriptEngine.Config.GetFloat("RecoilScaleFactor", m_recoilScaleFactor);
         }
 
         public override Object InitializeLifetimeService()
@@ -207,7 +220,26 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             delay = (int)((float)delay * m_ScriptDelayFactor);
             if (delay == 0)
                 return;
-            System.Threading.Thread.Sleep(delay);
+
+            Sleep(delay);
+        }
+
+        protected virtual void Sleep(int delay)
+        {
+            if (m_coopSleepHandle == null)
+                System.Threading.Thread.Sleep(delay);
+            else
+                CheckForCoopTermination(delay);
+        }
+
+        /// <summary>
+        /// Check for co-operative termination.
+        /// </summary>
+        /// <param name='delay'>If called with 0, then just the check is performed with no wait.</param>
+        protected virtual void CheckForCoopTermination(int delay)
+        {
+            if (m_coopSleepHandle.WaitOne(delay))
+                throw new ScriptCoopStopException();
         }
 
         public Scene World
@@ -392,79 +424,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             }
         }
 
-        protected UUID InventoryKey(string name, int type)
-        {
-            TaskInventoryItem item = m_host.Inventory.GetInventoryItem(name);
-
-            if (item != null && item.Type == type)
-                return item.AssetID;
-            else
-                return UUID.Zero;
-        }
-
-        /// <summary>
-        /// accepts a valid UUID, -or- a name of an inventory item.
-        /// Returns a valid UUID or UUID.Zero if key invalid and item not found
-        /// in prim inventory.
-        /// </summary>
-        /// <param name="k"></param>
-        /// <returns></returns>
-        protected UUID KeyOrName(string k)
-        {
-            UUID key;
-
-            // if we can parse the string as a key, use it.
-            // else try to locate the name in inventory of object. found returns key,
-            // not found returns UUID.Zero
-            if (!UUID.TryParse(k, out key))
-            {
-                TaskInventoryItem item = m_host.Inventory.GetInventoryItem(k);
-
-                if (item != null)
-                    key = item.AssetID;
-                else
-                    key = UUID.Zero;
-            }
-
-            return key;
-        }
-
-        /// <summary>
-        /// Return the UUID of the asset matching the specified key or name
-        /// and asset type.
-        /// </summary>
-        /// <param name="k"></param>
-        /// <param name="type"></param>
-        /// <returns></returns>
-        protected UUID KeyOrName(string k, AssetType type)
-        {
-            UUID key;
-
-            if (!UUID.TryParse(k, out key))
-            {
-                TaskInventoryItem item = m_host.Inventory.GetInventoryItem(k);
-                if (item != null && item.Type == (int)type)
-                    key = item.AssetID;
-            }
-            else
-            {
-                lock (m_host.TaskInventory)
-                {
-                    foreach (KeyValuePair<UUID, TaskInventoryItem> item in m_host.TaskInventory)
-                    {
-                        if (item.Value.Type == (int)type && item.Value.Name == k)
-                        {
-                            key = item.Value.ItemID;
-                            break;
-                        }
-                    }
-                }
-            }
-
-
-            return key;
-        }
-
         //These are the implementations of the various ll-functions used by the LSL scripts.
         public LSL_Float llSin(double f)
         {
@@ -1483,19 +1442,20 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                         return 0;
 
                 case ScriptBaseClass.STATUS_ROTATE_X:
-                    if (m_host.GetAxisRotation(2) == 2)
+                    // if (m_host.GetAxisRotation(2) != 0)
+                    if (m_host.GetAxisRotation((int)SceneObjectGroup.axisSelect.STATUS_ROTATE_X) != 0)
                         return 1;
                     else
                         return 0;
 
                 case ScriptBaseClass.STATUS_ROTATE_Y:
-                    if (m_host.GetAxisRotation(4) == 4)
+                    if (m_host.GetAxisRotation((int)SceneObjectGroup.axisSelect.STATUS_ROTATE_Y) != 0)
                         return 1;
                     else
                         return 0;
 
                 case ScriptBaseClass.STATUS_ROTATE_Z:
-                    if (m_host.GetAxisRotation(8) == 8)
+                    if (m_host.GetAxisRotation((int)SceneObjectGroup.axisSelect.STATUS_ROTATE_Z) != 0)
                         return 1;
                     else
                         return 0;
@@ -1875,10 +1835,17 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 part.Shape.FlexiForceX = (float)Force.x;
                 part.Shape.FlexiForceY = (float)Force.y;
                 part.Shape.FlexiForceZ = (float)Force.z;
-                part.Shape.PathCurve = 0x80;
-                part.ParentGroup.HasGroupChanged = true;
-                part.ScheduleFullUpdate();
+                part.Shape.PathCurve = (byte)Extrusion.Flexible;
+            }
+            else
+            {
+                // Other values not set, they do not seem to be sent to the viewer
+                // Setting PathCurve appears to be what actually toggles the check box and turns Flexi on and off
+                part.Shape.PathCurve = (byte)Extrusion.Straight;
+                part.Shape.FlexiEntry = false;
             }
+            part.ParentGroup.HasGroupChanged = true;
+            part.ScheduleFullUpdate();
         }
 
         /// <summary>
@@ -1996,7 +1963,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
             UUID textureID = new UUID();
 
-                    textureID = InventoryKey(texture, (int)AssetType.Texture);
+                    textureID = ScriptUtils.GetAssetIdFromItemName(m_host, texture, (int)AssetType.Texture);
                     if (textureID == UUID.Zero)
                     {
                             if (!UUID.TryParse(texture, out textureID))
@@ -2712,7 +2679,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             if (m_SoundModule != null)
             {
                 m_SoundModule.SendSound(m_host.UUID,
-                        KeyOrName(sound, AssetType.Sound), volume, false, 0,
+                        ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, sound, AssetType.Sound), volume, false, 0,
                         0, false, false);
             }
         }
@@ -2722,7 +2689,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             m_host.AddScriptLPS(1);
             if (m_SoundModule != null)
             {
-                m_SoundModule.LoopSound(m_host.UUID, KeyOrName(sound),
+                m_SoundModule.LoopSound(m_host.UUID, ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, sound),
                         volume, 20, false);
             }
         }
@@ -2732,7 +2699,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             m_host.AddScriptLPS(1);
             if (m_SoundModule != null)
             {
-                m_SoundModule.LoopSound(m_host.UUID, KeyOrName(sound),
+                m_SoundModule.LoopSound(m_host.UUID, ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, sound),
                         volume, 20, true);
             }
         }
@@ -2754,7 +2721,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             if (m_SoundModule != null)
             {
                 m_SoundModule.SendSound(m_host.UUID,
-                        KeyOrName(sound, AssetType.Sound), volume, false, 0,
+                        ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, sound, AssetType.Sound), volume, false, 0,
                         0, true, false);
             }
         }
@@ -2766,7 +2733,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             if (m_SoundModule != null)
             {
                 m_SoundModule.SendSound(m_host.UUID,
-                        KeyOrName(sound, AssetType.Sound), volume, true, 0, 0,
+                        ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, sound, AssetType.Sound), volume, true, 0, 0,
                         false, false);
             }
         }
@@ -2783,7 +2750,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         {
             m_host.AddScriptLPS(1);
             if (m_SoundModule != null)
-                m_SoundModule.PreloadSound(m_host.UUID, KeyOrName(sound), 0);
+                m_SoundModule.PreloadSound(m_host.UUID, ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, sound), 0);
             ScriptSleep(1000);
         }
 
@@ -3141,11 +3108,15 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
                 PhysicsActor pa = new_group.RootPart.PhysActor;
 
+                //Recoil.
                 if (pa != null && pa.IsPhysical && (Vector3)vel != Vector3.Zero)
                 {
                     float groupmass = new_group.GetMass();
-                    vel *= -groupmass;
-                    llApplyImpulse(vel, 0);
+                    Vector3 recoil = -vel * groupmass * m_recoilScaleFactor;
+                    if (recoil != Vector3.Zero)
+                    {
+                        llApplyImpulse(recoil, 0);
+                    }
                 }
                 // Variable script delay? (see (http://wiki.secondlife.com/wiki/LSL_Delay)
                 return;
@@ -3220,7 +3191,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         {
 //            m_log.Info("llSleep snoozing " + sec + "s.");
             m_host.AddScriptLPS(1);
-            Thread.Sleep((int)(sec * 1000));
+
+            Sleep((int)(sec * 1000));
         }
 
         public LSL_Float llGetMass()
@@ -3322,7 +3294,9 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         /// <summary>
         /// Attach the object containing this script to the avatar that owns it.
         /// </summary>
-        /// <param name='attachment'>The attachment point (e.g. ATTACH_CHEST)</param>
+        /// <param name='attachmentPoint'>
+        /// The attachment point (e.g. <see cref="OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass.ATTACH_CHEST">ATTACH_CHEST</see>)
+        /// </param>
         /// <returns>true if the attach suceeded, false if it did not</returns>
         public bool AttachToAvatar(int attachmentPoint)
         {
@@ -3653,7 +3627,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 if (presence != null)
                 {
                     // Do NOT try to parse UUID, animations cannot be triggered by ID
-                    UUID animID = InventoryKey(anim, (int)AssetType.Animation);
+                    UUID animID = ScriptUtils.GetAssetIdFromItemName(m_host, anim, (int)AssetType.Animation);
                     if (animID == UUID.Zero)
                         presence.Animator.AddAnimation(anim, m_host.UUID);
                     else
@@ -3675,12 +3649,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
                 if (presence != null)
                 {
-                    UUID animID = KeyOrName(anim);
+                    UUID animID = ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, anim);
 
                     if (animID == UUID.Zero)
                         presence.Animator.RemoveAnimation(anim);
                     else
-                        presence.Animator.RemoveAnimation(animID);
+                        presence.Animator.RemoveAnimation(animID, true);
                 }
             }
         }
@@ -3753,21 +3727,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             }
             else
             {
-                bool sitting = false;
-                if (m_host.SitTargetAvatar == agentID)
-                {
-                    sitting = true;
-                }
-                else
-                {
-                    foreach (SceneObjectPart p in m_host.ParentGroup.Parts)
-                    {
-                        if (p.SitTargetAvatar == agentID)
-                            sitting = true;
-                    }
-                }
-
-                if (sitting)
+                if (m_host.ParentGroup.GetSittingAvatars().Contains(agentID))
                 {
                     // When agent is sitting, certain permissions are implicit if requested from sitting agent
                     implicitPerms = ScriptBaseClass.PERMISSION_TRIGGER_ANIMATION |
@@ -3809,7 +3769,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 INPCModule npcModule = World.RequestModuleInterface<INPCModule>();
                 if (npcModule != null && npcModule.IsNPC(agentID, World))
                 {
-                    if (agentID == m_host.ParentGroup.OwnerID || npcModule.GetOwner(agentID) == m_host.ParentGroup.OwnerID)
+                    if (npcModule.CheckPermissions(agentID, m_host.OwnerID))
                     {
                         lock (m_host.TaskInventory)
                         {
@@ -4184,62 +4144,56 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         public LSL_String llGetLinkName(int linknum)
         {
             m_host.AddScriptLPS(1);
-            // simplest case, this prims link number
-            if (linknum == m_host.LinkNum || linknum == ScriptBaseClass.LINK_THIS)
-                return m_host.Name;
 
-            // parse for sitting avatare-names
-            List<String> nametable = new List<String>();
-            World.ForEachRootScenePresence(delegate(ScenePresence presence)
+            if (linknum < 0)
             {
-                SceneObjectPart sitPart = presence.ParentPart;
-                if (sitPart != null && m_host.ParentGroup.ContainsPart(sitPart.LocalId))
-                    nametable.Add(presence.ControllingClient.Name);
-            });
-
-            int totalprims = m_host.ParentGroup.PrimCount + nametable.Count;
-            if (totalprims > m_host.ParentGroup.PrimCount)
-            {
-                // sitting Avatar-Name with negativ linknum / SinglePrim
-                if (linknum < 0 && m_host.ParentGroup.PrimCount == 1 && nametable.Count == 1)
-                    return nametable[0];
-                // Prim-Name / SinglePrim Sitting Avatar
-                if (linknum == 1 && m_host.ParentGroup.PrimCount == 1 && nametable.Count == 1)
+                if (linknum == ScriptBaseClass.LINK_THIS)
                     return m_host.Name;
-                // LinkNumber > of Real PrimSet = AvatarName
-                if (linknum > m_host.ParentGroup.PrimCount && linknum <= totalprims)
-                    return nametable[totalprims - linknum];
+                else
+                    return ScriptBaseClass.NULL_KEY;
             }
 
-            // Single prim
-            if (m_host.LinkNum == 0)
+            int actualPrimCount = m_host.ParentGroup.PrimCount;
+            List<UUID> sittingAvatarIds = m_host.ParentGroup.GetSittingAvatars();
+            int adjustedPrimCount = actualPrimCount + sittingAvatarIds.Count;
+
+            // Special case for a single prim.  In this case the linknum is zero.  However, this will not match a single
+            // prim that has any avatars sat upon it (in which case the root prim is link 1).
+            if (linknum == 0)
             {
-                if (linknum == 0 || linknum == ScriptBaseClass.LINK_ROOT)
+                if (actualPrimCount == 1 && sittingAvatarIds.Count == 0)
                     return m_host.Name;
-                else
-                    return UUID.Zero.ToString();
-            }
 
-            // Link set
-            SceneObjectPart part = null;
-            if (m_host.LinkNum == 1) // this is the Root prim
+                return ScriptBaseClass.NULL_KEY;
+            }
+            // Special case to handle a single prim with sitting avatars.  GetLinkPart() would only match zero but
+            // here we must match 1 (ScriptBaseClass.LINK_ROOT).
+            else if (linknum == 1 && actualPrimCount == 1)
             {
-                if (linknum < 0)
-                    part = m_host.ParentGroup.GetLinkNumPart(2);
+                if (sittingAvatarIds.Count > 0)
+                    return m_host.ParentGroup.RootPart.Name;
                 else
-                    part = m_host.ParentGroup.GetLinkNumPart(linknum);
+                    return ScriptBaseClass.NULL_KEY;
             }
-            else // this is a child prim
+            else if (linknum <= adjustedPrimCount)
             {
-                if (linknum < 2)
-                    part = m_host.ParentGroup.GetLinkNumPart(1);
+                if (linknum <= actualPrimCount)
+                {
+                    return m_host.ParentGroup.GetLinkNumPart(linknum).Name;
+                }
                 else
-                    part = m_host.ParentGroup.GetLinkNumPart(linknum);
+                {
+                    ScenePresence sp = World.GetScenePresence(sittingAvatarIds[linknum - actualPrimCount - 1]);
+                    if (sp != null)
+                        return sp.Name;
+                    else
+                        return ScriptBaseClass.NULL_KEY;
+                }
             }
-            if (part != null)
-                return part.Name;
             else
-                return UUID.Zero.ToString();
+            {
+                return ScriptBaseClass.NULL_KEY;
+            }
         }
 
         public LSL_Integer llGetInventoryNumber(int type)
@@ -4691,7 +4645,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         private void DoLLTeleport(ScenePresence sp, string destination, Vector3 targetPos, Vector3 targetLookAt)
         {
-            UUID assetID = KeyOrName(destination);
+            UUID assetID = ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, destination);
 
             // The destinaion is not an asset ID and also doesn't name a landmark.
             // Use it as a sim name
@@ -4764,7 +4718,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 return;
             }
             // TODO: Parameter check logic required.
-            m_host.CollisionSound = KeyOrName(impact_sound, AssetType.Sound);
+            m_host.CollisionSound = ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, impact_sound, AssetType.Sound);
             m_host.CollisionSoundVolume = (float)impact_volume;
             m_host.CollisionSoundType = 1;
         }
@@ -4934,6 +4888,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                     }
                 }
             }
+
             if (pushAllowed)
             {
                 float distance = (PusheePos - m_host.AbsolutePosition).Length();
@@ -4963,17 +4918,21 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                     applied_linear_impulse *= scaling_factor;
 
                 }
+
                 if (pusheeIsAvatar)
                 {
                     if (pusheeav != null)
                     {
-                        if (pusheeav.PhysicsActor != null)
+                        PhysicsActor pa = pusheeav.PhysicsActor;
+
+                        if (pa != null)
                         {
                             if (local != 0)
                             {
                                 applied_linear_impulse *= m_host.GetWorldRotation();
                             }
-                            pusheeav.PhysicsActor.AddForce(applied_linear_impulse, true);
+
+                            pa.AddForce(applied_linear_impulse, true);
                         }
                     }
                 }
@@ -5851,9 +5810,9 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         }
 
         /// <summary>
-        /// Insert the list identified by <src> into the
-        /// list designated by <dest> such that the first
-        /// new element has the index specified by <index>
+        /// Insert the list identified by <paramref name="src"/> into the
+        /// list designated by <paramref name="dest"/> such that the first
+        /// new element has the index specified by <paramref name="index"/>
         /// </summary>
 
         public LSL_List llListInsertList(LSL_List dest, LSL_List src, int index)
@@ -6219,13 +6178,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                                 if (parcelOwned && land.LandData.OwnerID == id ||
                                     parcel && land.LandData.GlobalID == id)
                                 {
-                                    result.Add(ssp.UUID.ToString());
+                                    result.Add(new LSL_Key(ssp.UUID.ToString()));
                                 }
                             }
                         }
                         else
                         {
-                            result.Add(ssp.UUID.ToString());
+                            result.Add(new LSL_Key(ssp.UUID.ToString()));
                         }
                     }
                     // Maximum of 100 results
@@ -6329,7 +6288,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             if (m_SoundModule != null)
             {
                 m_SoundModule.TriggerSoundLimited(m_host.UUID,
-                        KeyOrName(sound, AssetType.Sound), volume,
+                        ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, sound, AssetType.Sound), volume,
                         bottom_south_west, top_north_east);
             }
         }
@@ -6686,6 +6645,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             ps.BurstSpeedMax = 1.0f;
             ps.BurstRate = 0.1f;
             ps.PartMaxAge = 10.0f;
+            ps.BurstPartCount = 1;
             return ps;
         }
 
@@ -6707,10 +6667,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             SetParticleSystem(m_host, rules);
         }
 
-        private void SetParticleSystem(SceneObjectPart part, LSL_List rules)
+        private void SetParticleSystem(SceneObjectPart part, LSL_List rules) 
         {
-
-
             if (rules.Length == 0)
             {
                 part.RemoveParticleSystem();
@@ -6801,7 +6759,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                             break;
 
                         case (int)ScriptBaseClass.PSYS_SRC_TEXTURE:
-                            prules.Texture = KeyOrName(rules.GetLSLStringItem(i + 1));
+                            prules.Texture = ScriptUtils.GetAssetIdFromKeyOrItemName(m_host, rules.GetLSLStringItem(i + 1));
                             break;
 
                         case (int)ScriptBaseClass.PSYS_SRC_BURST_RATE:
@@ -7373,6 +7331,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         public void llCloseRemoteDataChannel(string channel)
         {
             m_host.AddScriptLPS(1);
+
+            IXmlRpcRouter xmlRpcRouter = m_ScriptEngine.World.RequestModuleInterface<IXmlRpcRouter>();
+            if (xmlRpcRouter != null)
+            {
+                xmlRpcRouter.UnRegisterReceiver(channel, m_item.ItemID);
+            }
+
             IXMLRPC xmlrpcMod = m_ScriptEngine.World.RequestModuleInterface<IXMLRPC>();
             if (xmlrpcMod != null)
                 xmlrpcMod.CloseXMLRPCChannel((UUID)channel);
@@ -7746,9 +7711,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             UUID sculptId;
 
             if (!UUID.TryParse(map, out sculptId))
-            {
-                sculptId = InventoryKey(map, (int)AssetType.Texture);
-            }
+                sculptId = ScriptUtils.GetAssetIdFromItemName(m_host, map, (int)AssetType.Texture);
 
             if (sculptId == UUID.Zero)
                 return;
@@ -10238,6 +10201,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 return UUID.Zero.ToString();
             }
         }
+
         public LSL_String llRequestURL()
         {
             m_host.AddScriptLPS(1);
@@ -11519,6 +11483,35 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                             case ScriptBaseClass.OBJECT_PHYSICS_COST:
                                 ret.Add(new LSL_Float(0));
                                 break;
+                            case ScriptBaseClass.OBJECT_CHARACTER_TIME: // Pathfinding
+                                ret.Add(new LSL_Float(0));
+                                break;
+                            case ScriptBaseClass.OBJECT_ROOT:
+                                SceneObjectPart p = av.ParentPart;
+                                if (p != null)
+                                {
+                                    ret.Add(new LSL_String(p.ParentGroup.RootPart.UUID.ToString()));
+                                }
+                                else
+                                {
+                                    ret.Add(new LSL_String(id));
+                                }
+                                break;
+                            case ScriptBaseClass.OBJECT_ATTACHED_POINT:
+                                ret.Add(new LSL_Integer(0));
+                                break;
+                            case ScriptBaseClass.OBJECT_PATHFINDING_TYPE: // Pathfinding
+                                ret.Add(new LSL_Integer(ScriptBaseClass.OPT_AVATAR));
+                                break;
+                            case ScriptBaseClass.OBJECT_PHYSICS:
+                                ret.Add(new LSL_Integer(0));
+                                break;
+                            case ScriptBaseClass.OBJECT_PHANTOM:
+                                ret.Add(new LSL_Integer(0));
+                                break;
+                            case ScriptBaseClass.OBJECT_TEMP_ON_REZ:
+                                ret.Add(new LSL_Integer(0));
+                                break;
                             default:
                                 // Invalid or unhandled constant.
                                 ret.Add(new LSL_Integer(ScriptBaseClass.OBJECT_UNKNOWN_DETAIL));
@@ -11610,6 +11603,52 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                                 // The value returned in SL for normal prims is prim count
                                 ret.Add(new LSL_Float(obj.PhysicsCost));
                                 break;
+                            case ScriptBaseClass.OBJECT_CHARACTER_TIME: // Pathfinding
+                                ret.Add(new LSL_Float(0));
+                                break;
+                            case ScriptBaseClass.OBJECT_ROOT:
+                                ret.Add(new LSL_String(obj.ParentGroup.RootPart.UUID.ToString()));
+                                break;
+                            case ScriptBaseClass.OBJECT_ATTACHED_POINT:
+                                ret.Add(new LSL_Integer(obj.ParentGroup.AttachmentPoint));
+                                break;
+                            case ScriptBaseClass.OBJECT_PATHFINDING_TYPE:
+                                byte pcode = obj.Shape.PCode;
+                                if (obj.ParentGroup.AttachmentPoint != 0
+                                   || pcode == (byte)PCode.Grass
+                                   || pcode == (byte)PCode.Tree
+                                   || pcode == (byte)PCode.NewTree)
+                                {
+                                    ret.Add(new LSL_Integer(ScriptBaseClass.OPT_OTHER));
+                                }
+                                else
+                                {
+                                    ret.Add(new LSL_Integer(ScriptBaseClass.OPT_LEGACY_LINKSET));
+                                }
+                                break;
+                            case ScriptBaseClass.OBJECT_PHYSICS:
+                                if (obj.ParentGroup.AttachmentPoint != 0)
+                                {
+                                    ret.Add(new LSL_Integer(0)); // Always false if attached
+                                }
+                                else
+                                {
+                                    ret.Add(new LSL_Integer(obj.ParentGroup.UsesPhysics ? 1 : 0));
+                                }
+                                break;
+                            case ScriptBaseClass.OBJECT_PHANTOM:
+                                if (obj.ParentGroup.AttachmentPoint != 0)
+                                {
+                                    ret.Add(new LSL_Integer(0)); // Always false if attached
+                                }
+                                else
+                                {
+                                    ret.Add(new LSL_Integer(obj.ParentGroup.IsPhantom ? 1 : 0));
+                                }
+                                break;
+                            case ScriptBaseClass.OBJECT_TEMP_ON_REZ:
+                                ret.Add(new LSL_Integer(obj.ParentGroup.IsTemporary ? 1 : 0));
+                                break;
                             default:
                                 // Invalid or unhandled constant.
                                 ret.Add(new LSL_Integer(ScriptBaseClass.OBJECT_UNKNOWN_DETAIL));
@@ -11689,14 +11728,15 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 return UUID.Zero.ToString();
             }
 
+            string reqIdentifier = UUID.Random().ToString();
+
             // was: UUID tid = tid = AsyncCommands.
-            UUID tid = AsyncCommands.DataserverPlugin.RegisterRequest(m_host.LocalId, m_item.ItemID, assetID.ToString());
+            UUID tid = AsyncCommands.DataserverPlugin.RegisterRequest(m_host.LocalId, m_item.ItemID, reqIdentifier);
 
             if (NotecardCache.IsCached(assetID))
             {
-                AsyncCommands.
-                DataserverPlugin.DataserverReply(assetID.ToString(),
-                NotecardCache.GetLines(assetID).ToString());
+                AsyncCommands.DataserverPlugin.DataserverReply(reqIdentifier, NotecardCache.GetLines(assetID).ToString());
+
                 ScriptSleep(100);
                 return tid.ToString();
             }
@@ -11712,9 +11752,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 string data = Encoding.UTF8.GetString(a.Data);
                 //m_log.Debug(data);
                 NotecardCache.Cache(id, data);
-                AsyncCommands.
-                        DataserverPlugin.DataserverReply(id.ToString(),
-                        NotecardCache.GetLines(id).ToString());
+                AsyncCommands.DataserverPlugin.DataserverReply(reqIdentifier, NotecardCache.GetLines(id).ToString());
             });
 
             ScriptSleep(100);
@@ -11743,13 +11781,16 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 return UUID.Zero.ToString();
             }
 
+            string reqIdentifier = UUID.Random().ToString();
+
             // was: UUID tid = tid = AsyncCommands.
-            UUID tid = AsyncCommands.DataserverPlugin.RegisterRequest(m_host.LocalId, m_item.ItemID, assetID.ToString());
+            UUID tid = AsyncCommands.DataserverPlugin.RegisterRequest(m_host.LocalId, m_item.ItemID, reqIdentifier);
 
             if (NotecardCache.IsCached(assetID))
             {
-                AsyncCommands.DataserverPlugin.DataserverReply(assetID.ToString(),
-                                                               NotecardCache.GetLine(assetID, line, m_notecardLineReadCharsMax));
+                AsyncCommands.DataserverPlugin.DataserverReply(
+                    reqIdentifier, NotecardCache.GetLine(assetID, line, m_notecardLineReadCharsMax));
+
                 ScriptSleep(100);
                 return tid.ToString();
             }
@@ -11765,8 +11806,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                              string data = Encoding.UTF8.GetString(a.Data);
                              //m_log.Debug(data);
                              NotecardCache.Cache(id, data);
-                             AsyncCommands.DataserverPlugin.DataserverReply(id.ToString(),
-                                                                            NotecardCache.GetLine(id, line, m_notecardLineReadCharsMax));
+                             AsyncCommands.DataserverPlugin.DataserverReply(
+                                reqIdentifier, NotecardCache.GetLine(assetID, line, m_notecardLineReadCharsMax));
                          });
 
             ScriptSleep(100);
@@ -11993,12 +12034,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                     radius = Math.Abs(maxY);
                 if (Math.Abs(maxZ) > radius)
                     radius = Math.Abs(maxZ);
-
+                radius = radius*1.413f;
                 Vector3 ac = group.AbsolutePosition - rayStart;
                 Vector3 bc = group.AbsolutePosition - rayEnd;
 
                 double d = Math.Abs(Vector3.Mag(Vector3.Cross(ab, ac)) / Vector3.Distance(rayStart, rayEnd));
-
+                
                 // Too far off ray, don't bother
                 if (d > radius)
                     return;
@@ -12008,11 +12049,20 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 if (d2 > 0)
                     return;
 
+                ray = new Ray(rayStart, Vector3.Normalize(rayEnd - rayStart));
                 EntityIntersection intersection = group.TestIntersection(ray, true, false);
                 // Miss.
                 if (!intersection.HitTF)
                     return;
 
+                Vector3 b1 = group.AbsolutePosition + new Vector3(minX, minY, minZ);
+                Vector3 b2 = group.AbsolutePosition + new Vector3(maxX, maxY, maxZ);
+                //m_log.DebugFormat("[LLCASTRAY]: min<{0},{1},{2}>, max<{3},{4},{5}> = hitp<{6},{7},{8}>", b1.X,b1.Y,b1.Z,b2.X,b2.Y,b2.Z,intersection.ipoint.X,intersection.ipoint.Y,intersection.ipoint.Z);
+                if (!(intersection.ipoint.X >= b1.X && intersection.ipoint.X <= b2.X &&
+                    intersection.ipoint.Y >= b1.Y && intersection.ipoint.Y <= b2.Y &&
+                    intersection.ipoint.Z >= b1.Z && intersection.ipoint.Z <= b2.Z))
+                    return;
+
                 ContactResult result = new ContactResult ();
                 result.ConsumerID = group.LocalId;
 //                result.Depth = intersection.distance;
@@ -12228,7 +12278,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 if (checkNonPhysical)
                     rayfilter |= RayFilterFlags.nonphysical;
                 if (detectPhantom)
-                    rayfilter |= RayFilterFlags.LSLPhanton;
+                    rayfilter |= RayFilterFlags.LSLPhantom;
 
                 Vector3 direction = dir * ( 1/dist);
 
@@ -12286,8 +12336,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 if (checkPhysical || checkNonPhysical || detectPhantom)
                 {
                     ContactResult[] objectHits = ObjectIntersection(rayStart, rayEnd, checkPhysical, checkNonPhysical, detectPhantom);
-                    foreach (ContactResult r in objectHits)
-                        results.Add(r);
+                    for (int iter = 0; iter < objectHits.Length; iter++)
+                    {
+                        // Redistance the Depth because the Scene RayCaster returns distance from center to make the rezzing code simpler.
+                        objectHits[iter].Depth = Vector3.Distance(objectHits[iter].Pos, rayStart);
+                        results.Add(objectHits[iter]);
+                    }
                 }
             }
 
@@ -13235,7 +13289,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         public static void Cache(UUID assetID, string text)
         {
-            CacheCheck();
+            CheckCache();
 
             lock (m_Notecards)
             {
@@ -13273,7 +13327,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         /// Get a notecard line.
         /// </summary>
         /// <param name="assetID"></param>
-        /// <param name="line">Lines start at index 0</param>
+        /// <param name="lineNumber">Lines start at index 0</param>
         /// <returns></returns>
         public static string GetLine(UUID assetID, int lineNumber)
         {
@@ -13302,9 +13356,14 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         /// Get a notecard line.
         /// </summary>
         /// <param name="assetID"></param>
-        /// <param name="line">Lines start at index 0</param>
-        /// <param name="maxLength">Maximum length of the returned line.  Longer lines will be truncated</para>
-        /// <returns></returns>
+        /// <param name="lineNumber">Lines start at index 0</param>
+        /// <param name="maxLength">
+        /// Maximum length of the returned line.
+        /// </param>
+        /// <returns>
+        /// If the line length is longer than <paramref name="maxLength"/>,
+        /// the return string will be truncated.
+        /// </returns>
         public static string GetLine(UUID assetID, int lineNumber, int maxLength)
         {
             string line = GetLine(assetID, lineNumber);
@@ -13315,14 +13374,17 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             return line;
         }
 
-        public static void CacheCheck()
+        public static void CheckCache()
         {
-            foreach (UUID key in new List<UUID>(m_Notecards.Keys))
+            lock (m_Notecards)
             {
-                Notecard nc = m_Notecards[key];
-                if (nc.lastRef.AddSeconds(30) < DateTime.Now)
-                    m_Notecards.Remove(key);
+                foreach (UUID key in new List<UUID>(m_Notecards.Keys))
+                {
+                    Notecard nc = m_Notecards[key];
+                    if (nc.lastRef.AddSeconds(30) < DateTime.Now)
+                        m_Notecards.Remove(key);
+                }
             }
         }
     }
-}
+}
\ No newline at end of file
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LS_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LS_Api.cs
index ceb4660..1d6cb6d 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LS_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LS_Api.cs
@@ -30,6 +30,7 @@ using System.Reflection;
 using System.Collections;
 using System.Collections.Generic;
 using System.Runtime.Remoting.Lifetime;
+using System.Threading;
 using OpenMetaverse;
 using Nini.Config;
 using OpenSim;
@@ -61,9 +62,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         internal bool m_LSFunctionsEnabled = false;
         internal IScriptModuleComms m_comms = null;
 
-        public void Initialize(IScriptEngine ScriptEngine, SceneObjectPart host, TaskInventoryItem item)
+        public void Initialize(
+            IScriptEngine scriptEngine, SceneObjectPart host, TaskInventoryItem item, WaitHandle coopSleepHandle)
         {
-            m_ScriptEngine = ScriptEngine;
+            m_ScriptEngine = scriptEngine;
             m_host = host;
 
             if (m_ScriptEngine.Config.GetBoolean("AllowLightShareFunctions", false))
@@ -92,10 +94,9 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             get { return m_ScriptEngine.World; }
         }
 
-        //
-        //Dumps an error message on the debug console.
-        //
-
+        /// <summary>
+        /// Dumps an error message on the debug console.
+        /// </summary>
         internal void LSShoutError(string message)
         {
             if (message.Length > 1023)
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs
index ee89f9d..542222e 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/MOD_Api.cs
@@ -30,6 +30,8 @@ using System.Reflection;
 using System.Collections;
 using System.Collections.Generic;
 using System.Runtime.Remoting.Lifetime;
+using System.Threading;
+using log4net;
 using OpenMetaverse;
 using Nini.Config;
 using OpenSim;
@@ -55,15 +57,18 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
     [Serializable]
     public class MOD_Api : MarshalByRefObject, IMOD_Api, IScriptApi
     {
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
         internal IScriptEngine m_ScriptEngine;
         internal SceneObjectPart m_host;
         internal TaskInventoryItem m_item;
         internal bool m_MODFunctionsEnabled = false;
         internal IScriptModuleComms m_comms = null;
 
-        public void Initialize(IScriptEngine ScriptEngine, SceneObjectPart host, TaskInventoryItem item)
+        public void Initialize(
+            IScriptEngine scriptEngine, SceneObjectPart host, TaskInventoryItem item, WaitHandle coopSleepHandle)
         {
-            m_ScriptEngine = ScriptEngine;
+            m_ScriptEngine = scriptEngine;
             m_host = host;
             m_item = item;
 
@@ -107,8 +112,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             if (message.Length > 1023)
                 message = message.Substring(0, 1023);
 
-            World.SimChat(Utils.StringToBytes(message),
-                          ChatTypeEnum.Shout, ScriptBaseClass.DEBUG_CHANNEL, m_host.ParentGroup.RootPart.AbsolutePosition, m_host.Name, m_host.UUID, true);
+            World.SimChat(
+                Utils.StringToBytes(message),
+                ChatTypeEnum.Shout, ScriptBaseClass.DEBUG_CHANNEL, 
+                m_host.ParentGroup.RootPart.AbsolutePosition, m_host.Name, m_host.UUID, false);
 
             IWorldComm wComm = m_ScriptEngine.World.RequestModuleInterface<IWorldComm>();
             wComm.DeliverMessage(ChatTypeEnum.Shout, ScriptBaseClass.DEBUG_CHANNEL, m_host.Name, m_host.UUID, message);
@@ -122,6 +129,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         /// <returns>string result of the invocation</returns>
         public void modInvokeN(string fname, params object[] parms)
         {
+//            m_log.DebugFormat(
+//                "[MOD API]: Invoking dynamic function {0}, args '{1}' with {2} return type", 
+//                fname, 
+//                string.Join(",", Array.ConvertAll<object, string>(parms, o => o.ToString())), 
+//                ((MethodInfo)MethodBase.GetCurrentMethod()).ReturnType);
+
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(void))
                 MODError(String.Format("return type mismatch for {0}",fname));
@@ -131,6 +144,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         public LSL_String modInvokeS(string fname, params object[] parms)
         {
+//            m_log.DebugFormat(
+//                "[MOD API]: Invoking dynamic function {0}, args '{1}' with {2} return type", 
+//                fname, 
+//                string.Join(",", Array.ConvertAll<object, string>(parms, o => o.ToString())), 
+//                ((MethodInfo)MethodBase.GetCurrentMethod()).ReturnType);
+
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(string))
                 MODError(String.Format("return type mismatch for {0}",fname));
@@ -141,6 +160,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         public LSL_Integer modInvokeI(string fname, params object[] parms)
         {
+//            m_log.DebugFormat(
+//                "[MOD API]: Invoking dynamic function {0}, args '{1}' with {2} return type", 
+//                fname, 
+//                string.Join(",", Array.ConvertAll<object, string>(parms, o => o.ToString())), 
+//                ((MethodInfo)MethodBase.GetCurrentMethod()).ReturnType);
+
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(int))
                 MODError(String.Format("return type mismatch for {0}",fname));
@@ -151,6 +176,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         
         public LSL_Float modInvokeF(string fname, params object[] parms)
         {
+//            m_log.DebugFormat(
+//                "[MOD API]: Invoking dynamic function {0}, args '{1}' with {2} return type", 
+//                fname, 
+//                string.Join(",", Array.ConvertAll<object, string>(parms, o => o.ToString())), 
+//                ((MethodInfo)MethodBase.GetCurrentMethod()).ReturnType);
+
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(float))
                 MODError(String.Format("return type mismatch for {0}",fname));
@@ -161,6 +192,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         public LSL_Key modInvokeK(string fname, params object[] parms)
         {
+//            m_log.DebugFormat(
+//                "[MOD API]: Invoking dynamic function {0}, args '{1}' with {2} return type", 
+//                fname, 
+//                string.Join(",", Array.ConvertAll<object, string>(parms, o => o.ToString())), 
+//                ((MethodInfo)MethodBase.GetCurrentMethod()).ReturnType);
+
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(UUID))
                 MODError(String.Format("return type mismatch for {0}",fname));
@@ -171,6 +208,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         public LSL_Vector modInvokeV(string fname, params object[] parms)
         {
+//            m_log.DebugFormat(
+//                "[MOD API]: Invoking dynamic function {0}, args '{1}' with {2} return type", 
+//                fname, 
+//                string.Join(",", Array.ConvertAll<object, string>(parms, o => o.ToString())), 
+//                ((MethodInfo)MethodBase.GetCurrentMethod()).ReturnType);
+
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(OpenMetaverse.Vector3))
                 MODError(String.Format("return type mismatch for {0}",fname));
@@ -181,6 +224,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         public LSL_Rotation modInvokeR(string fname, params object[] parms)
         {
+//            m_log.DebugFormat(
+//                "[MOD API]: Invoking dynamic function {0}, args '{1}' with {2} return type", 
+//                fname, 
+//                string.Join(",", Array.ConvertAll<object, string>(parms, o => o.ToString())), 
+//                ((MethodInfo)MethodBase.GetCurrentMethod()).ReturnType);
+
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(OpenMetaverse.Quaternion))
                 MODError(String.Format("return type mismatch for {0}",fname));
@@ -191,6 +240,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         public LSL_List modInvokeL(string fname, params object[] parms)
         {
+//            m_log.DebugFormat(
+//                "[MOD API]: Invoking dynamic function {0}, args '{1}' with {2} return type", 
+//                fname, 
+//                string.Join(",", Array.ConvertAll<object, string>(parms, o => o.ToString())), 
+//                ((MethodInfo)MethodBase.GetCurrentMethod()).ReturnType);
+
             Type returntype = m_comms.LookupReturnType(fname);
             if (returntype != typeof(object[]))
                 MODError(String.Format("return type mismatch for {0}",fname));
@@ -248,6 +303,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 return "";
             }
 
+//            m_log.DebugFormat(
+//                "[MOD API]: Invoking dynamic function {0}, args '{1}' with {2} return type", 
+//                fname, 
+//                string.Join(",", Array.ConvertAll<object, string>(parms, o => o.ToString())), 
+//                ((MethodInfo)MethodBase.GetCurrentMethod()).ReturnType);
+
             Type[] signature = m_comms.LookupTypeSignature(fname);
             if (signature.Length != parms.Length)
                 MODError(String.Format("wrong number of parameters to function {0}",fname));
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
index 8aac33f..e87bb04 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
@@ -143,9 +143,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         protected IUrlModule m_UrlModule = null;
 
-        public void Initialize(IScriptEngine ScriptEngine, SceneObjectPart host, TaskInventoryItem item)
+        public void Initialize(
+            IScriptEngine scriptEngine, SceneObjectPart host, TaskInventoryItem item, WaitHandle coopSleepHandle)
         {
-            m_ScriptEngine = ScriptEngine;
+            m_ScriptEngine = scriptEngine;
             m_host = host;
             m_item = item;
             m_debuggerSafe = m_ScriptEngine.Config.GetBoolean("DebuggerSafe", false);
@@ -254,11 +255,23 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             wComm.DeliverMessage(ChatTypeEnum.Shout, ScriptBaseClass.DEBUG_CHANNEL, m_host.Name, m_host.UUID, message);
         }
 
+        // Returns of the function is allowed. Throws a script exception if not allowed.
         public void CheckThreatLevel(ThreatLevel level, string function)
         {
             if (!m_OSFunctionsEnabled)
                 OSSLError(String.Format("{0} permission denied.  All OS functions are disabled.", function)); // throws
 
+            string reasonWhyNot = CheckThreatLevelTest(level, function);
+            if (!String.IsNullOrEmpty(reasonWhyNot))
+            {
+                OSSLError(reasonWhyNot);
+            }
+        }
+
+        // Check to see if function is allowed. Returns an empty string if function permitted
+        //     or a string explaining why this function can't be used.
+        private string CheckThreatLevelTest(ThreatLevel level, string function)
+        {
             if (!m_FunctionPerms.ContainsKey(function))
             {
                 FunctionPerms perms = new FunctionPerms();
@@ -338,10 +351,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             {
                 // Allow / disallow by threat level
                 if (level > m_MaxThreatLevel)
-                    OSSLError(
+                    return
                         String.Format(
                             "{0} permission denied.  Allowed threat level is {1} but function threat level is {2}.",
-                            function, m_MaxThreatLevel, level));
+                            function, m_MaxThreatLevel, level);
             }
             else
             {
@@ -351,7 +364,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                     if (m_FunctionPerms[function].AllowedOwners.Contains(m_host.OwnerID))
                     {
                         // prim owner is in the list of allowed owners
-                        return;
+                        return String.Empty;
                     }
 
                     UUID ownerID = m_item.OwnerID;
@@ -363,7 +376,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
                         if (land.LandData.GroupID == m_item.GroupID && land.LandData.GroupID != UUID.Zero)
                         {
-                            return;
+                            return String.Empty;
                         }
                     }
 
@@ -374,7 +387,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
                         if (land.LandData.OwnerID == ownerID)
                         {
-                            return;
+                            return String.Empty;
                         }
                     }
 
@@ -384,7 +397,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                         //Only Estate Managers may use the function
                         if (World.RegionInfo.EstateSettings.IsEstateManagerOrOwner(ownerID) && World.RegionInfo.EstateSettings.EstateOwner != ownerID)
                         {
-                            return;
+                            return String.Empty;
                         }
                     }
 
@@ -393,25 +406,24 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                     {
                         if (World.RegionInfo.EstateSettings.EstateOwner == ownerID)
                         {
-                            return;
+                            return String.Empty;
                         }
                     }
 
                     if (!m_FunctionPerms[function].AllowedCreators.Contains(m_item.CreatorID))
-                        OSSLError(
+                        return(
                             String.Format("{0} permission denied. Script creator is not in the list of users allowed to execute this function and prim owner also has no permission.",
                             function));
 
                     if (m_item.CreatorID != ownerID)
                     {
                         if ((m_item.CurrentPermissions & (uint)PermissionMask.Modify) != 0)
-                            OSSLError(
-                                String.Format("{0} permission denied. Script permissions error.",
-                                function));
+                            return String.Format("{0} permission denied. Script permissions error.", function);
 
                     }
                 }
             }
+            return String.Empty;
         }
 
         internal void OSSLDeprecated(string function, string replacement)
@@ -983,7 +995,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                     if (animID == UUID.Zero)
                         target.Animator.RemoveAnimation(animation);
                     else
-                        target.Animator.RemoveAnimation(animID);
+                        target.Animator.RemoveAnimation(animID, true);
                 }
             }
         }
@@ -1214,12 +1226,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 sunHour += 24.0;
 
             World.RegionInfo.RegionSettings.UseEstateSun = useEstateSun;
-            World.RegionInfo.RegionSettings.SunPosition  = sunHour + 6; // LL Region Sun Hour is 6 to 30
-            World.RegionInfo.RegionSettings.FixedSun     = sunFixed;
+            World.RegionInfo.RegionSettings.SunPosition = sunHour + 6; // LL Region Sun Hour is 6 to 30
+            World.RegionInfo.RegionSettings.FixedSun = sunFixed;
             World.RegionInfo.RegionSettings.Save();
 
-            World.EventManager.TriggerEstateToolsSunUpdate(
-                World.RegionInfo.RegionHandle, sunFixed, useEstateSun, (float)sunHour);
+            World.EventManager.TriggerEstateToolsSunUpdate(World.RegionInfo.RegionHandle);
         }
 
         /// <summary>
@@ -1244,8 +1255,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             World.RegionInfo.EstateSettings.FixedSun = sunFixed;
             World.RegionInfo.EstateSettings.Save();
 
-            World.EventManager.TriggerEstateToolsSunUpdate(
-                World.RegionInfo.RegionHandle, sunFixed, World.RegionInfo.RegionSettings.UseEstateSun, (float)sunHour);
+            World.EventManager.TriggerEstateToolsSunUpdate(World.RegionInfo.RegionHandle);
         }
 
         /// <summary>
@@ -1569,6 +1579,32 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             }
         }
 
+        public string osGetPhysicsEngineType()
+        {
+            // High because it can be used to target attacks to known weaknesses
+            // This would allow a new class of griefer scripts that don't even
+            // require their user to know what they are doing (see script
+            // kiddie)
+            // Because it would be nice if scripts didn't blow up if the information
+            //    about the physics engine, this function returns an empty string if
+            //    the user does not have permission to see it. This as opposed to
+            //    throwing an exception.
+            m_host.AddScriptLPS(1);
+            string ret = String.Empty;
+            if (String.IsNullOrEmpty(CheckThreatLevelTest(ThreatLevel.High, "osGetPhysicsEngineType")))
+            {
+                if (m_ScriptEngine.World.PhysicsScene != null)
+                {
+                    ret = m_ScriptEngine.World.PhysicsScene.EngineType;
+                    // An old physics engine might have an uninitialized engine type
+                    if (ret == null)
+                        ret = "unknown";
+                }
+            }
+
+            return ret;
+        }
+
         public string osGetSimulatorVersion()
         {
             // High because it can be used to target attacks to known weaknesses
@@ -2136,9 +2172,14 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             CheckThreatLevel(ThreatLevel.Moderate, "osGetGridHomeURI");
             m_host.AddScriptLPS(1);
 
-            string HomeURI = String.Empty;
             IConfigSource config = m_ScriptEngine.ConfigSource;
+            string HomeURI = Util.GetConfigVarFromSections<string>(config, "HomeURI", 
+                new string[] { "Startup", "Hypergrid" }, String.Empty);
+
+            if (!string.IsNullOrEmpty(HomeURI))
+                return HomeURI;
 
+            // Legacy. Remove soon!
             if (config.Configs["LoginService"] != null)
                 HomeURI = config.Configs["LoginService"].GetString("SRV_HomeURI", HomeURI);
 
@@ -2153,9 +2194,14 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             CheckThreatLevel(ThreatLevel.Moderate, "osGetGridGatekeeperURI");
             m_host.AddScriptLPS(1);
 
-            string gatekeeperURI = String.Empty;
             IConfigSource config = m_ScriptEngine.ConfigSource;
+            string gatekeeperURI = Util.GetConfigVarFromSections<string>(config, "GatekeeperURI",
+                new string[] { "Startup", "Hypergrid" }, String.Empty);
+
+            if (!string.IsNullOrEmpty(gatekeeperURI))
+                return gatekeeperURI;
 
+            // Legacy. Remove soon!
             if (config.Configs["GridService"] != null)
                 gatekeeperURI = config.Configs["GridService"].GetString("Gatekeeper", gatekeeperURI);
 
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/SensorRepeat.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/SensorRepeat.cs
index 4dd795d..d3ef378 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/SensorRepeat.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/SensorRepeat.cs
@@ -42,6 +42,29 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
     {
 //        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
 
+        /// <summary>
+        /// Used by one-off and repeated sensors
+        /// </summary>
+        public class SensorInfo
+        {
+            public uint localID;
+            public UUID itemID;
+            public double interval;
+            public DateTime next;
+
+            public string name;
+            public UUID keyID;
+            public int type;
+            public double range;
+            public double arc;
+            public SceneObjectPart host;
+
+            public SensorInfo Clone()
+            {
+                return (SensorInfo)this.MemberwiseClone();
+            }
+        }
+
         public AsyncCommandManager m_CmdManager;
 
         /// <summary>
@@ -78,24 +101,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
         private int maximumToReturn = 16;
 
         //
-        // SenseRepeater and Sensors
-        //
-        private class SenseRepeatClass
-        {
-            public uint localID;
-            public UUID itemID;
-            public double interval;
-            public DateTime next;
-
-            public string name;
-            public UUID keyID;
-            public int type;
-            public double range;
-            public double arc;
-            public SceneObjectPart host;
-        }
-
-        //
         // Sensed entity
         //
         private class SensedEntity : IComparable
@@ -127,7 +132,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
         ///
         /// Always lock SenseRepeatListLock when updating this list.
         /// </remarks>
-        private List<SenseRepeatClass> SenseRepeaters = new List<SenseRepeatClass>();
+        private List<SensorInfo> SenseRepeaters = new List<SensorInfo>();
         private object SenseRepeatListLock = new object();
 
         public void SetSenseRepeatEvent(uint m_localID, UUID m_itemID,
@@ -141,7 +146,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
                 return;
 
             // Add to timer
-            SenseRepeatClass ts = new SenseRepeatClass();
+            SensorInfo ts = new SensorInfo();
             ts.localID = m_localID;
             ts.itemID = m_itemID;
             ts.interval = sec;
@@ -160,11 +165,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
             AddSenseRepeater(ts);
         }
 
-        private void AddSenseRepeater(SenseRepeatClass senseRepeater)
+        private void AddSenseRepeater(SensorInfo senseRepeater)
         {
             lock (SenseRepeatListLock)
             {
-                List<SenseRepeatClass> newSenseRepeaters = new List<SenseRepeatClass>(SenseRepeaters);
+                List<SensorInfo> newSenseRepeaters = new List<SensorInfo>(SenseRepeaters);
                 newSenseRepeaters.Add(senseRepeater);
                 SenseRepeaters = newSenseRepeaters;
             }
@@ -175,8 +180,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
             // Remove from timer
             lock (SenseRepeatListLock)
             {
-                List<SenseRepeatClass> newSenseRepeaters = new List<SenseRepeatClass>();
-                foreach (SenseRepeatClass ts in SenseRepeaters)
+                List<SensorInfo> newSenseRepeaters = new List<SensorInfo>();
+                foreach (SensorInfo ts in SenseRepeaters)
                 {
                     if (ts.localID != m_localID || ts.itemID != m_itemID)
                     {
@@ -191,7 +196,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
         public void CheckSenseRepeaterEvents()
         {
             // Go through all timers
-            foreach (SenseRepeatClass ts in SenseRepeaters)
+            foreach (SensorInfo ts in SenseRepeaters)
             {
                 // Time has passed?
                 if (ts.next.ToUniversalTime() < DateTime.Now.ToUniversalTime())
@@ -208,7 +213,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
                               double range, double arc, SceneObjectPart host)
         {
             // Add to timer
-            SenseRepeatClass ts = new SenseRepeatClass();
+            SensorInfo ts = new SensorInfo();
             ts.localID = m_localID;
             ts.itemID = m_itemID;
             ts.interval = 0;
@@ -224,7 +229,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
             SensorSweep(ts);
         }
 
-        private void SensorSweep(SenseRepeatClass ts)
+        private void SensorSweep(SensorInfo ts)
         {
             if (ts.host == null)
             {
@@ -300,7 +305,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
             }
         }
 
-        private List<SensedEntity> doObjectSensor(SenseRepeatClass ts)
+        private List<SensedEntity> doObjectSensor(SensorInfo ts)
         {
             List<EntityBase> Entities;
             List<SensedEntity> sensedEntities = new List<SensedEntity>();
@@ -451,7 +456,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
             return sensedEntities;
         }
 
-        private List<SensedEntity> doAgentSensor(SenseRepeatClass ts)
+        private List<SensedEntity> doAgentSensor(SensorInfo ts)
         {
             List<SensedEntity> sensedEntities = new List<SensedEntity>();
 
@@ -630,7 +635,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
         {
             List<Object> data = new List<Object>();
 
-            foreach (SenseRepeatClass ts in SenseRepeaters)
+            foreach (SensorInfo ts in SenseRepeaters)
             {
                 if (ts.itemID == itemID)
                 {
@@ -660,7 +665,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
 
             while (idx < data.Length)
             {
-                SenseRepeatClass ts = new SenseRepeatClass();
+                SensorInfo ts = new SensorInfo();
 
                 ts.localID = localID;
                 ts.itemID = itemID;
@@ -681,5 +686,18 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
                 idx += 6;
             }
         }
+
+        public List<SensorInfo> GetSensorInfo()
+        {
+            List<SensorInfo> retList = new List<SensorInfo>();
+
+            lock (SenseRepeatListLock)
+            {
+                foreach (SensorInfo i in SenseRepeaters)
+                    retList.Add(i.Clone());
+            }
+
+            return retList;
+        }           
     }
-}
+}
\ No newline at end of file
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/Timer.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/Timer.cs
index 9ee6946..68aacd2 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/Timer.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/Timer.cs
@@ -35,6 +35,21 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
 {
     public class Timer
     {
+        public class TimerInfo
+        {
+            public uint localID;
+            public UUID itemID;
+            //public double interval;
+            public long interval;
+            //public DateTime next;
+            public long next;
+
+            public TimerInfo Clone()
+            {
+                return (TimerInfo)this.MemberwiseClone();
+            }
+        }
+
         public AsyncCommandManager m_CmdManager;
 
         public int TimersCount
@@ -59,17 +74,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
             return localID.ToString() + itemID.ToString();
         }
 
-        private class TimerClass
-        {
-            public uint localID;
-            public UUID itemID;
-            //public double interval;
-            public long interval;
-            //public DateTime next;
-            public long next;
-        }
-
-        private Dictionary<string,TimerClass> Timers = new Dictionary<string,TimerClass>();
+        private Dictionary<string,TimerInfo> Timers = new Dictionary<string,TimerInfo>();
         private object TimerListLock = new object();
 
         public void SetTimerEvent(uint m_localID, UUID m_itemID, double sec)
@@ -81,7 +86,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
             }
 
             // Add to timer
-            TimerClass ts = new TimerClass();
+            TimerInfo ts = new TimerInfo();
             ts.localID = m_localID;
             ts.itemID = m_itemID;
             ts.interval = Convert.ToInt64(sec * 10000000); // How many 100 nanoseconds (ticks) should we wait
@@ -118,14 +123,14 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
             if (Timers.Count == 0)
                 return;
 
-            Dictionary<string, TimerClass>.ValueCollection tvals;
+            Dictionary<string, TimerInfo>.ValueCollection tvals;
             lock (TimerListLock)
             {
                 // Go through all timers
                 tvals = Timers.Values;
             }
 
-            foreach (TimerClass ts in tvals)
+            foreach (TimerInfo ts in tvals)
             {
                 // Time has passed?
                 if (ts.next < DateTime.Now.Ticks)
@@ -149,8 +154,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
 
             lock (TimerListLock)
             {
-                Dictionary<string, TimerClass>.ValueCollection tvals = Timers.Values;
-                foreach (TimerClass ts in tvals)
+                Dictionary<string, TimerInfo>.ValueCollection tvals = Timers.Values;
+                foreach (TimerInfo ts in tvals)
                 {
                     if (ts.itemID == itemID)
                     {
@@ -169,7 +174,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
 
             while (idx < data.Length)
             {
-                TimerClass ts = new TimerClass();
+                TimerInfo ts = new TimerInfo();
 
                 ts.localID = localID;
                 ts.itemID = itemID;
@@ -183,5 +188,18 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
                 }
             }
         }
+
+        public List<TimerInfo> GetTimersInfo()
+        {
+            List<TimerInfo> retList = new List<TimerInfo>();
+
+            lock (TimerListLock)
+            {
+                foreach (TimerInfo i in Timers.Values)
+                    retList.Add(i.Clone());
+            }
+
+            return retList;
+        }  
     }
 }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Properties/AssemblyInfo.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Properties/AssemblyInfo.cs
index d173db0..6d218a6 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("0.7.5.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("0.7.6.*")]
+
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs
index 8aa1249..a652cb8 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/IOSSL_Api.cs
@@ -259,6 +259,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Interfaces
 
         string osGetScriptEngineName();
         string osGetSimulatorVersion();
+        string osGetPhysicsEngineType();
         Hashtable osParseJSON(string JSON);
 
         void osMessageObject(key objectUUID,string message);
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
index 0dd5a57..da3b31f 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
@@ -557,6 +557,23 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         public const int OBJECT_SERVER_COST = 14;
         public const int OBJECT_STREAMING_COST = 15;
         public const int OBJECT_PHYSICS_COST = 16;
+        public const int OBJECT_CHARACTER_TIME = 17;
+        public const int OBJECT_ROOT = 18;
+        public const int OBJECT_ATTACHED_POINT = 19;
+        public const int OBJECT_PATHFINDING_TYPE = 20;
+        public const int OBJECT_PHYSICS = 21;
+        public const int OBJECT_PHANTOM = 22;
+        public const int OBJECT_TEMP_ON_REZ = 23;
+
+        // Pathfinding types
+        public const int OPT_OTHER = -1;
+        public const int OPT_LEGACY_LINKSET = 0;
+        public const int OPT_AVATAR = 1;
+        public const int OPT_CHARACTER = 2;
+        public const int OPT_WALKABLE = 3;
+        public const int OPT_STATIC_OBSTACLE = 4;
+        public const int OPT_MATERIAL_VOLUME = 5;
+        public const int OPT_EXCLUSION_VOLUME = 6;
 
         // for llGetAgentList
         public const int AGENT_LIST_PARCEL = 1;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs
index 95dff18..b63773b 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/OSSL_Stub.cs
@@ -420,6 +420,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
             return m_OSSL_Functions.osGetScriptEngineName();
         }
 
+        public string osGetPhysicsEngineType()
+        {
+            return m_OSSL_Functions.osGetPhysicsEngineType();
+        }
+
         public string osGetSimulatorVersion()
         {
            return m_OSSL_Functions.osGetSimulatorVersion();
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/Properties/AssemblyInfo.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/Properties/AssemblyInfo.cs
index 573a803..b1825ac 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("0.7.5.*")]
+[assembly: AssemblyVersion("0.7.6.*")]
 [assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/YieldProlog/Properties/AssemblyInfo.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/YieldProlog/Properties/AssemblyInfo.cs
index f6d5d41..342dbff 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/YieldProlog/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/YieldProlog/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("0.7.5.*")]
+[assembly: AssemblyVersion("0.7.6.*")]
 [assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs b/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs
index 97dd0f6..9e32f40 100644
--- a/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/CodeTools/CSCodeGenerator.cs
@@ -31,7 +31,6 @@ using System.Collections.Generic;
 using System.Reflection;
 using log4net;
 using Tools;
-
 using OpenSim.Region.Framework.Interfaces;
 
 namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
@@ -49,6 +48,18 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
         private List<string> m_warnings = new List<string>();
         private IScriptModuleComms m_comms = null;
 
+        private bool m_insertCoopTerminationChecks;
+        private static string m_coopTerminationCheck = "opensim_reserved_CheckForCoopTermination();";
+
+        /// <summary>
+        /// Keep a record of the previous node when we do the parsing.
+        /// </summary>
+        /// <remarks>
+        /// We do this here because the parser generated by CSTools does not retain a reference to its parent node.
+        /// The previous node is required so we can correctly insert co-op termination checks when required.
+        /// </remarks>
+//        private SYMBOL m_previousNode;
+
         /// <summary>
         /// Creates an 'empty' CSCodeGenerator instance.
         /// </summary>
@@ -58,9 +69,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             ResetCounters();
         }
 
-        public CSCodeGenerator(IScriptModuleComms comms)
+        public CSCodeGenerator(IScriptModuleComms comms, bool insertCoopTerminationChecks)
         {
             m_comms = comms;
+            m_insertCoopTerminationChecks = insertCoopTerminationChecks;
             ResetCounters();
         }
 
@@ -155,7 +167,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             // here's the payload
             retstr += GenerateLine();
             foreach (SYMBOL s in m_astRoot.kids)
-                retstr += GenerateNode(s);
+                retstr += GenerateNode(m_astRoot, s);
 
             // close braces!
             m_braceCount--;
@@ -165,7 +177,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
 
             // Removes all carriage return characters which may be generated in Windows platform. Is there
             // cleaner way of doing this?
-            retstr=retstr.Replace("\r", "");
+            retstr = retstr.Replace("\r", "");
 
             return retstr;
         }
@@ -191,9 +203,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
         /// Recursively called to generate each type of node. Will generate this
         /// node, then all it's children.
         /// </summary>
+        /// <param name="previousSymbol">The parent node.</param>
         /// <param name="s">The current node to generate code for.</param>
         /// <returns>String containing C# code for SYMBOL s.</returns>
-        private string GenerateNode(SYMBOL s)
+        private string GenerateNode(SYMBOL previousSymbol, SYMBOL s)
         {
             string retstr = String.Empty;
 
@@ -207,11 +220,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             else if (s is State)
                 retstr += GenerateState((State) s);
             else if (s is CompoundStatement)
-                retstr += GenerateCompoundStatement((CompoundStatement) s);
+                retstr += GenerateCompoundStatement(previousSymbol, (CompoundStatement) s);
             else if (s is Declaration)
                 retstr += GenerateDeclaration((Declaration) s);
             else if (s is Statement)
-                retstr += GenerateStatement((Statement) s);
+                retstr += GenerateStatement(previousSymbol, (Statement) s);
             else if (s is ReturnStatement)
                 retstr += GenerateReturnStatement((ReturnStatement) s);
             else if (s is JumpLabel)
@@ -261,7 +274,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             else
             {
                 foreach (SYMBOL kid in s.kids)
-                    retstr += GenerateNode(kid);
+                    retstr += GenerateNode(s, kid);
             }
 
             return retstr;
@@ -295,7 +308,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             retstr += GenerateLine(")");
 
             foreach (SYMBOL kid in remainingKids)
-                retstr += GenerateNode(kid);
+                retstr += GenerateNode(gf, kid);
 
             return retstr;
         }
@@ -312,7 +325,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             foreach (SYMBOL s in gv.kids)
             {
                 retstr += Indent();
-                retstr += GenerateNode(s);
+                retstr += GenerateNode(gv, s);
                 retstr += GenerateLine(";");
             }
 
@@ -365,7 +378,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             retstr += GenerateLine(")");
 
             foreach (SYMBOL kid in remainingKids)
-                retstr += GenerateNode(kid);
+                retstr += GenerateNode(se, kid);
 
             return retstr;
         }
@@ -404,7 +417,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
 
             foreach (SYMBOL s in al.kids)
             {
-                retstr += GenerateNode(s);
+                retstr += GenerateNode(al, s);
                 if (0 < comma--)
                     retstr += Generate(", ");
             }
@@ -417,7 +430,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
         /// </summary>
         /// <param name="cs">The CompoundStatement node.</param>
         /// <returns>String containing C# code for CompoundStatement cs.</returns>
-        private string GenerateCompoundStatement(CompoundStatement cs)
+        private string GenerateCompoundStatement(SYMBOL previousSymbol, CompoundStatement cs)
         {
             string retstr = String.Empty;
 
@@ -425,8 +438,19 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             retstr += GenerateIndentedLine("{");
             m_braceCount++;
 
+            if (m_insertCoopTerminationChecks)
+            {
+                // We have to check in event functions as well because the user can manually call these.
+                if (previousSymbol is GlobalFunctionDefinition 
+                    || previousSymbol is WhileStatement 
+                    || previousSymbol is DoWhileStatement 
+                    || previousSymbol is ForLoop
+                    || previousSymbol is StateEvent)
+                retstr += GenerateIndentedLine(m_coopTerminationCheck);
+            }
+
             foreach (SYMBOL kid in cs.kids)
-                retstr += GenerateNode(kid);
+                retstr += GenerateNode(cs, kid);
 
             // closing brace
             m_braceCount--;
@@ -450,10 +474,28 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
         /// </summary>
         /// <param name="s">The Statement node.</param>
         /// <returns>String containing C# code for Statement s.</returns>
-        private string GenerateStatement(Statement s)
+        private string GenerateStatement(SYMBOL previousSymbol, Statement s)
         {
             string retstr = String.Empty;
             bool printSemicolon = true;
+            bool transformToBlock = false;
+
+            if (m_insertCoopTerminationChecks)
+            {
+                // A non-braced single line do while structure cannot contain multiple statements.
+                // So to insert the termination check we change this to a braced control structure instead.
+                if (previousSymbol is WhileStatement 
+                    || previousSymbol is DoWhileStatement 
+                    || previousSymbol is ForLoop)
+                {
+                    transformToBlock = true;
+
+                    // FIXME: This will be wrongly indented because the previous for/while/dowhile will have already indented.
+                    retstr += GenerateIndentedLine("{");
+
+                    retstr += GenerateIndentedLine(m_coopTerminationCheck);
+                }
+            }
 
             retstr += Indent();
 
@@ -466,12 +508,18 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
                 // (MONO) error.
                 if (!(s.kids.Top is IdentExpression && 1 == s.kids.Count))
                     foreach (SYMBOL kid in s.kids)
-                        retstr += GenerateNode(kid);
+                        retstr += GenerateNode(s, kid);
             }
 
             if (printSemicolon)
                 retstr += GenerateLine(";");
 
+            if (transformToBlock)
+            {
+                // FIXME: This will be wrongly indented because the for/while/dowhile is currently handling the unindent
+                retstr += GenerateIndentedLine("}");
+            }
+
             return retstr;
         }
 
@@ -487,10 +535,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             List<string> identifiers = new List<string>();
             checkForMultipleAssignments(identifiers, a);
 
-            retstr += GenerateNode((SYMBOL) a.kids.Pop());
+            retstr += GenerateNode(a, (SYMBOL) a.kids.Pop());
             retstr += Generate(String.Format(" {0} ", a.AssignmentType), a);
             foreach (SYMBOL kid in a.kids)
-                retstr += GenerateNode(kid);
+                retstr += GenerateNode(a, kid);
 
             return retstr;
         }
@@ -563,7 +611,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             retstr += Generate("return ", rs);
 
             foreach (SYMBOL kid in rs.kids)
-                retstr += GenerateNode(kid);
+                retstr += GenerateNode(rs, kid);
 
             return retstr;
         }
@@ -575,7 +623,14 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
         /// <returns>String containing C# code for JumpLabel jl.</returns>
         private string GenerateJumpLabel(JumpLabel jl)
         {
-            return Generate(String.Format("{0}:", CheckName(jl.LabelName)), jl) + " NoOp();\n";
+            string labelStatement;
+
+            if (m_insertCoopTerminationChecks)
+                labelStatement = m_coopTerminationCheck + "\n";
+            else
+                labelStatement = "NoOp();\n";
+
+            return Generate(String.Format("{0}: ", CheckName(jl.LabelName)), jl) + labelStatement;
         }
 
         /// <summary>
@@ -598,14 +653,14 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             string retstr = String.Empty;
 
             retstr += GenerateIndented("if (", ifs);
-            retstr += GenerateNode((SYMBOL) ifs.kids.Pop());
+            retstr += GenerateNode(ifs, (SYMBOL) ifs.kids.Pop());
             retstr += GenerateLine(")");
 
             // CompoundStatement handles indentation itself but we need to do it
             // otherwise.
             bool indentHere = ifs.kids.Top is Statement;
             if (indentHere) m_braceCount++;
-            retstr += GenerateNode((SYMBOL) ifs.kids.Pop());
+            retstr += GenerateNode(ifs, (SYMBOL) ifs.kids.Pop());
             if (indentHere) m_braceCount--;
 
             if (0 < ifs.kids.Count) // do it again for an else
@@ -614,7 +669,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
 
                 indentHere = ifs.kids.Top is Statement;
                 if (indentHere) m_braceCount++;
-                retstr += GenerateNode((SYMBOL) ifs.kids.Pop());
+                retstr += GenerateNode(ifs, (SYMBOL) ifs.kids.Pop());
                 if (indentHere) m_braceCount--;
             }
 
@@ -641,14 +696,14 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             string retstr = String.Empty;
 
             retstr += GenerateIndented("while (", ws);
-            retstr += GenerateNode((SYMBOL) ws.kids.Pop());
+            retstr += GenerateNode(ws, (SYMBOL) ws.kids.Pop());
             retstr += GenerateLine(")");
 
             // CompoundStatement handles indentation itself but we need to do it
             // otherwise.
             bool indentHere = ws.kids.Top is Statement;
             if (indentHere) m_braceCount++;
-            retstr += GenerateNode((SYMBOL) ws.kids.Pop());
+            retstr += GenerateNode(ws, (SYMBOL) ws.kids.Pop());
             if (indentHere) m_braceCount--;
 
             return retstr;
@@ -669,11 +724,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             // otherwise.
             bool indentHere = dws.kids.Top is Statement;
             if (indentHere) m_braceCount++;
-            retstr += GenerateNode((SYMBOL) dws.kids.Pop());
+            retstr += GenerateNode(dws, (SYMBOL) dws.kids.Pop());
             if (indentHere) m_braceCount--;
 
             retstr += GenerateIndented("while (", dws);
-            retstr += GenerateNode((SYMBOL) dws.kids.Pop());
+            retstr += GenerateNode(dws, (SYMBOL) dws.kids.Pop());
             retstr += GenerateLine(");");
 
             return retstr;
@@ -702,7 +757,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             retstr += Generate("; ");
             // for (x = 0; x < 10; x++)
             //             ^^^^^^
-            retstr += GenerateNode((SYMBOL) fl.kids.Pop());
+            retstr += GenerateNode(fl, (SYMBOL) fl.kids.Pop());
             retstr += Generate("; ");
             // for (x = 0; x < 10; x++)
             //                     ^^^
@@ -713,7 +768,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             // otherwise.
             bool indentHere = fl.kids.Top is Statement;
             if (indentHere) m_braceCount++;
-            retstr += GenerateNode((SYMBOL) fl.kids.Pop());
+            retstr += GenerateNode(fl, (SYMBOL) fl.kids.Pop());
             if (indentHere) m_braceCount--;
 
             return retstr;
@@ -758,7 +813,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
                 while (s is ParenthesisExpression)
                     s = (SYMBOL)s.kids.Pop();
                     
-                retstr += GenerateNode(s);
+                retstr += GenerateNode(fls, s);
                 if (0 < comma--)
                     retstr += Generate(", ");
             }
@@ -779,20 +834,20 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             {
                 // special case handling for logical and/or, see Mantis 3174
                 retstr += "((bool)(";
-                retstr += GenerateNode((SYMBOL)be.kids.Pop());
+                retstr += GenerateNode(be, (SYMBOL)be.kids.Pop());
                 retstr += "))";
                 retstr += Generate(String.Format(" {0} ", be.ExpressionSymbol.Substring(0,1)), be);
                 retstr += "((bool)(";
                 foreach (SYMBOL kid in be.kids)
-                    retstr += GenerateNode(kid);
+                    retstr += GenerateNode(be, kid);
                 retstr += "))";
             }
             else
             {
-                retstr += GenerateNode((SYMBOL)be.kids.Pop());
+                retstr += GenerateNode(be, (SYMBOL)be.kids.Pop());
                 retstr += Generate(String.Format(" {0} ", be.ExpressionSymbol), be);
                 foreach (SYMBOL kid in be.kids)
-                    retstr += GenerateNode(kid);
+                    retstr += GenerateNode(be, kid);
             }
 
             return retstr;
@@ -808,7 +863,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             string retstr = String.Empty;
 
             retstr += Generate(ue.UnarySymbol, ue);
-            retstr += GenerateNode((SYMBOL) ue.kids.Pop());
+            retstr += GenerateNode(ue, (SYMBOL) ue.kids.Pop());
 
             return retstr;
         }
@@ -824,7 +879,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
 
             retstr += Generate("(");
             foreach (SYMBOL kid in pe.kids)
-                retstr += GenerateNode(kid);
+                retstr += GenerateNode(pe, kid);
             retstr += Generate(")");
 
             return retstr;
@@ -861,7 +916,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
 
             // we wrap all typecasted statements in parentheses
             retstr += Generate(String.Format("({0}) (", te.TypecastType), te);
-            retstr += GenerateNode((SYMBOL) te.kids.Pop());
+            retstr += GenerateNode(te, (SYMBOL) te.kids.Pop());
             retstr += Generate(")");
 
             return retstr;
@@ -931,7 +986,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             }
             
             foreach (SYMBOL kid in fc.kids)
-                retstr += GenerateNode(kid);
+                retstr += GenerateNode(fc, kid);
 
             retstr += Generate(")");
 
@@ -980,11 +1035,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             string retstr = String.Empty;
 
             retstr += Generate(String.Format("new {0}(", vc.Type), vc);
-            retstr += GenerateNode((SYMBOL) vc.kids.Pop());
+            retstr += GenerateNode(vc, (SYMBOL) vc.kids.Pop());
             retstr += Generate(", ");
-            retstr += GenerateNode((SYMBOL) vc.kids.Pop());
+            retstr += GenerateNode(vc, (SYMBOL) vc.kids.Pop());
             retstr += Generate(", ");
-            retstr += GenerateNode((SYMBOL) vc.kids.Pop());
+            retstr += GenerateNode(vc, (SYMBOL) vc.kids.Pop());
             retstr += Generate(")");
 
             return retstr;
@@ -1000,13 +1055,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             string retstr = String.Empty;
 
             retstr += Generate(String.Format("new {0}(", rc.Type), rc);
-            retstr += GenerateNode((SYMBOL) rc.kids.Pop());
+            retstr += GenerateNode(rc, (SYMBOL) rc.kids.Pop());
             retstr += Generate(", ");
-            retstr += GenerateNode((SYMBOL) rc.kids.Pop());
+            retstr += GenerateNode(rc, (SYMBOL) rc.kids.Pop());
             retstr += Generate(", ");
-            retstr += GenerateNode((SYMBOL) rc.kids.Pop());
+            retstr += GenerateNode(rc, (SYMBOL) rc.kids.Pop());
             retstr += Generate(", ");
-            retstr += GenerateNode((SYMBOL) rc.kids.Pop());
+            retstr += GenerateNode(rc, (SYMBOL) rc.kids.Pop());
             retstr += Generate(")");
 
             return retstr;
@@ -1024,7 +1079,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             retstr += Generate(String.Format("new {0}(", lc.Type), lc);
 
             foreach (SYMBOL kid in lc.kids)
-                retstr += GenerateNode(kid);
+                retstr += GenerateNode(lc, kid);
 
             retstr += Generate(")");
 
diff --git a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Compiler.cs b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Compiler.cs
index 03be2ab..9d20c9e 100644
--- a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Compiler.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Compiler.cs
@@ -72,6 +72,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
         private bool CompileWithDebugInformation;
         private Dictionary<string, bool> AllowedCompilers = new Dictionary<string, bool>(StringComparer.CurrentCultureIgnoreCase);
         private Dictionary<string, enumCompileType> LanguageMapping = new Dictionary<string, enumCompileType>(StringComparer.CurrentCultureIgnoreCase);
+        private bool m_insertCoopTerminationCalls;
 
         private string FilePrefix;
         private string ScriptEnginesPath = null;
@@ -95,20 +96,22 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
         private Dictionary<string, Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>>> m_lineMaps =
             new Dictionary<string, Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>>>();
 
+        public bool in_startup = true;
+
         public Compiler(IScriptEngine scriptEngine)
         {
-            m_scriptEngine = scriptEngine;;
+            m_scriptEngine = scriptEngine;
             ScriptEnginesPath = scriptEngine.ScriptEnginePath;
             ReadConfig();
         }
 
-        public bool in_startup = true;
         public void ReadConfig()
         {
             // Get some config
             WriteScriptSourceToDebugFile = m_scriptEngine.Config.GetBoolean("WriteScriptSourceToDebugFile", false);
             CompileWithDebugInformation = m_scriptEngine.Config.GetBoolean("CompileWithDebugInformation", true);
             bool DeleteScriptsOnStartup = m_scriptEngine.Config.GetBoolean("DeleteScriptsOnStartup", true);
+            m_insertCoopTerminationCalls = m_scriptEngine.Config.GetString("ScriptStopStrategy", "abort") == "co-op";
 
             // Get file prefix from scriptengine name and make it file system safe:
             FilePrefix = "CommonCompiler";
@@ -386,7 +389,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             if (language == enumCompileType.lsl)
             {
                 // Its LSL, convert it to C#
-                LSL_Converter = (ICodeConverter)new CSCodeGenerator(comms);
+                LSL_Converter = (ICodeConverter)new CSCodeGenerator(comms, m_insertCoopTerminationCalls);
                 compileScript = LSL_Converter.Convert(Script);
 
                 // copy converter warnings into our warnings.
@@ -411,16 +414,22 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             {
                 case enumCompileType.cs:
                 case enumCompileType.lsl:
-                    compileScript = CreateCSCompilerScript(compileScript);
+                    compileScript = CreateCSCompilerScript(
+                        compileScript, 
+                        m_scriptEngine.ScriptClassName, 
+                        m_scriptEngine.ScriptBaseClassName, 
+                        m_scriptEngine.ScriptBaseClassParameters);
                     break;
                 case enumCompileType.vb:
-                    compileScript = CreateVBCompilerScript(compileScript);
+                    compileScript = CreateVBCompilerScript(
+                        compileScript, m_scriptEngine.ScriptClassName, m_scriptEngine.ScriptBaseClassName);
                     break;
 //                case enumCompileType.js:
-//                    compileScript = CreateJSCompilerScript(compileScript);
+//                    compileScript = CreateJSCompilerScript(compileScript, m_scriptEngine.ScriptBaseClassName);
 //                    break;
                 case enumCompileType.yp:
-                    compileScript = CreateYPCompilerScript(compileScript);
+                    compileScript = CreateYPCompilerScript(
+                        compileScript, m_scriptEngine.ScriptClassName,m_scriptEngine.ScriptBaseClassName);
                     break;
             }
 
@@ -451,43 +460,60 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
 //            return compileScript;
 //        }
 
-        private static string CreateCSCompilerScript(string compileScript)
+        private static string CreateCSCompilerScript(
+            string compileScript, string className, string baseClassName, ParameterInfo[] constructorParameters)
         {
-            compileScript = String.Empty +
-                "using OpenSim.Region.ScriptEngine.Shared; using System.Collections.Generic;\r\n" +
-                String.Empty + "namespace SecondLife { " +
-                String.Empty + "public class Script : OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass { \r\n" +
-                @"public Script() { } " +
-                compileScript +
-                "} }\r\n";
+            compileScript = string.Format(    
+@"using OpenSim.Region.ScriptEngine.Shared; 
+using System.Collections.Generic;
+
+namespace SecondLife 
+{{ 
+    public class {0} : {1} 
+    {{
+        public {0}({2}) : base({3}) {{}}
+{4}
+    }}
+}}",
+                className,
+                baseClassName, 
+                constructorParameters != null 
+                    ? string.Join(", ", Array.ConvertAll<ParameterInfo, string>(constructorParameters, pi => pi.ToString())) 
+                    : "", 
+                constructorParameters != null 
+                    ? string.Join(", ", Array.ConvertAll<ParameterInfo, string>(constructorParameters, pi => pi.Name)) 
+                    : "", 
+                compileScript);
+
             return compileScript;
         }
 
-        private static string CreateYPCompilerScript(string compileScript)
+        private static string CreateYPCompilerScript(string compileScript, string className, string baseClassName)
         {
             compileScript = String.Empty +
                        "using OpenSim.Region.ScriptEngine.Shared.YieldProlog; " +
                         "using OpenSim.Region.ScriptEngine.Shared; using System.Collections.Generic;\r\n" +
                         String.Empty + "namespace SecondLife { " +
-                        String.Empty + "public class Script : OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass  { \r\n" +
+                        String.Empty + "public class " + className + " : " + baseClassName + " { \r\n" +
                         //@"public Script() { } " +
                         @"static OpenSim.Region.ScriptEngine.Shared.YieldProlog.YP YP=null; " +
-                        @"public Script() {  YP= new OpenSim.Region.ScriptEngine.Shared.YieldProlog.YP(); } " +
-
+                        @"public " + className + "() {  YP= new OpenSim.Region.ScriptEngine.Shared.YieldProlog.YP(); } " +
                         compileScript +
                         "} }\r\n";
+
             return compileScript;
         }
 
-        private static string CreateVBCompilerScript(string compileScript)
+        private static string CreateVBCompilerScript(string compileScript, string className, string baseClassName)
         {
             compileScript = String.Empty +
                 "Imports OpenSim.Region.ScriptEngine.Shared: Imports System.Collections.Generic: " +
                 String.Empty + "NameSpace SecondLife:" +
-                String.Empty + "Public Class Script: Inherits OpenSim.Region.ScriptEngine.Shared.ScriptBase.ScriptBaseClass: " +
+                String.Empty + "Public Class " + className + ": Inherits " + baseClassName +
                 "\r\nPublic Sub New()\r\nEnd Sub: " +
                 compileScript +
                 ":End Class :End Namespace\r\n";
+
             return compileScript;
         }
 
@@ -549,6 +575,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools
             parameters.ReferencedAssemblies.Add(Path.Combine(rootPath,
                     "OpenMetaverseTypes.dll"));
 
+            if (m_scriptEngine.ScriptReferencedAssemblies != null)
+                Array.ForEach<string>(
+                    m_scriptEngine.ScriptReferencedAssemblies, 
+                    a => parameters.ReferencedAssemblies.Add(Path.Combine(rootPath, a)));
+
             if (lang == enumCompileType.yp)
             {
                 parameters.ReferencedAssemblies.Add(Path.Combine(rootPath,
diff --git a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Properties/AssemblyInfo.cs b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Properties/AssemblyInfo.cs
index c65caa8..5b5c4fd 100644
--- a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("0.7.5.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("0.7.6.*")]
+
diff --git a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CSCodeGeneratorTest.cs b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CSCodeGeneratorTest.cs
index 7763619..77e087c 100644
--- a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CSCodeGeneratorTest.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CSCodeGeneratorTest.cs
@@ -39,7 +39,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools.Tests
     /// The generated C# code is compared against the expected C# code.
     /// </summary>
     [TestFixture]
-    public class CSCodeGeneratorTest
+    public class CSCodeGeneratorTest : OpenSimTestCase
     {
         [Test]
         public void TestDefaultState()
diff --git a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CompilerTest.cs b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CompilerTest.cs
index 1fa6954..05a8756 100644
--- a/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CompilerTest.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/CodeTools/Tests/CompilerTest.cs
@@ -41,7 +41,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.CodeTools.Tests
     /// the LSL source.
     /// </summary>
     [TestFixture]
-    public class CompilerTest
+    public class CompilerTest : OpenSimTestCase
     {
         private string m_testDir;
         private CSharpCodeProvider m_CSCodeProvider;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Helpers.cs b/OpenSim/Region/ScriptEngine/Shared/Helpers.cs
index 22804f5..e44a106 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Helpers.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Helpers.cs
@@ -82,6 +82,24 @@ namespace OpenSim.Region.ScriptEngine.Shared
         }
     }
 
+    /// <summary>
+    /// Used to signal when the script is stopping in co-operation with the script engine 
+    /// (instead of through Thread.Abort()).
+    /// </summary>
+    [Serializable]
+    public class ScriptCoopStopException : Exception
+    {
+        public ScriptCoopStopException()
+        {
+        }
+
+        protected ScriptCoopStopException(
+                SerializationInfo info, 
+                StreamingContext context)
+        {
+        }
+    }
+
     public class DetectParams
     {
         public const int AGENT = 1;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Instance/Properties/AssemblyInfo.cs b/OpenSim/Region/ScriptEngine/Shared/Instance/Properties/AssemblyInfo.cs
index 470e1a1..48964b6 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Instance/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Instance/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("0.7.5.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("0.7.6.*")]
+
diff --git a/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs b/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
index 771db0c..26850c4 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
@@ -94,6 +94,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
         private UUID m_CurrentStateHash;
         private UUID m_RegionID;
 
+        public int DebugLevel { get; set; }
+
         public Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>> LineMap { get; set; }
 
         private Dictionary<string,IScriptApi> m_Apis = new Dictionary<string,IScriptApi>();
@@ -156,6 +158,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
 
         public UUID AppDomain { get; set; }
 
+        public SceneObjectPart Part { get; private set; }
+
         public string PrimName { get; private set; }
 
         public string ScriptName { get; private set; }
@@ -174,6 +178,17 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
 
         public Queue EventQueue { get; private set; }
 
+        public long EventsQueued
+        {
+            get 
+            {
+                lock (EventQueue)
+                    return EventQueue.Count;
+            }   
+        }
+
+        public long EventsProcessed { get; private set; }
+
         public int StartParam { get; set; }
 
         public TaskInventoryItem ScriptTask { get; private set; }
@@ -186,66 +201,124 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
 
         public static readonly long MaxMeasurementPeriod = 30 * TimeSpan.TicksPerMinute;
 
+        private bool m_coopTermination;
+ 
+        private EventWaitHandle m_coopSleepHandle;
+
         public void ClearQueue()
         {
             m_TimerQueued = false;
             EventQueue.Clear();
         }
 
-        public ScriptInstance(IScriptEngine engine, SceneObjectPart part,
-                UUID itemID, UUID assetID, string assembly,
-                AppDomain dom, string primName, string scriptName,
-                int startParam, bool postOnRez, StateSource stateSource,
-                int maxScriptQueue)
+        public ScriptInstance(
+            IScriptEngine engine, SceneObjectPart part, TaskInventoryItem item,
+            int startParam, bool postOnRez,
+            int maxScriptQueue)
         {
             State = "default";
             EventQueue = new Queue(32);
 
             Engine = engine;
-            LocalID = part.LocalId;
-            ObjectID = part.UUID;
-            RootLocalID = part.ParentGroup.LocalId;
-            RootObjectID = part.ParentGroup.UUID;
-            ItemID = itemID;
-            AssetID = assetID;
-            PrimName = primName;
-            ScriptName = scriptName;
-            m_Assembly = assembly;
+            Part = part;
+            ScriptTask = item;
+
+            // This is currently only here to allow regression tests to get away without specifying any inventory
+            // item when they are testing script logic that doesn't require an item.
+            if (ScriptTask != null)
+            {
+                ScriptName = ScriptTask.Name;
+                ItemID = ScriptTask.ItemID;
+                AssetID = ScriptTask.AssetID;
+            }
+
+            PrimName = part.ParentGroup.Name;
             StartParam = startParam;
             m_MaxScriptQueue = maxScriptQueue;
-            m_stateSource = stateSource;
             m_postOnRez = postOnRez;
             m_AttachedAvatar = part.ParentGroup.AttachedAvatar;
             m_RegionID = part.ParentGroup.Scene.RegionInfo.RegionID;
 
-            if (part != null)
+            if (Engine.Config.GetString("ScriptStopStrategy", "abort") == "co-op")
             {
-                part.TaskInventory.LockItemsForRead(true);
-                if (part.TaskInventory.ContainsKey(ItemID))
-                {
-                    ScriptTask = part.TaskInventory[ItemID];
-                }
-                part.TaskInventory.LockItemsForRead(false);
+                m_coopTermination = true;
+                m_coopSleepHandle = new AutoResetEvent(false);
             }
+        }
+
+        /// <summary>
+        /// Load the script from an assembly into an AppDomain.
+        /// </summary>
+        /// <param name='dom'></param>
+        /// <param name='assembly'></param>
+        /// <param name='stateSource'></param>
+        /// <returns>false if load failed, true if suceeded</returns>
+        public bool Load(AppDomain dom, string assembly, StateSource stateSource)
+        {
+            m_Assembly = assembly;
+            m_stateSource = stateSource;
 
             ApiManager am = new ApiManager();
 
             foreach (string api in am.GetApis())
             {
                 m_Apis[api] = am.CreateApi(api);
-                m_Apis[api].Initialize(engine, part, ScriptTask);
+                m_Apis[api].Initialize(Engine, Part, ScriptTask, m_coopSleepHandle);
             }
     
             try
             {
+                object[] constructorParams;
+
+                Assembly scriptAssembly = dom.Load(Path.GetFileNameWithoutExtension(assembly));
+                Type scriptType = scriptAssembly.GetType("SecondLife.XEngineScript");
+
+                if (scriptType != null)
+                {
+                    constructorParams = new object[] { m_coopSleepHandle };
+                }
+                else if (!m_coopTermination)
+                {
+                    scriptType = scriptAssembly.GetType("SecondLife.Script");
+                    constructorParams = null;
+                }
+                else
+                {
+                    m_log.ErrorFormat(
+                        "[SCRIPT INSTANCE]: Not starting script {0} (id {1}) in part {2} (id {3}) in object {4} in {5}.  You must remove all existing {6}* script DLL files before using enabling co-op termination"
+                        + ", either by setting DeleteScriptsOnStartup = true in [XEngine] for one run"
+                        + " or by deleting these files manually.",
+                        ScriptTask.Name, ScriptTask.ItemID, Part.Name, Part.UUID, Part.ParentGroup.Name, Engine.World.Name, assembly);
+
+                    return false;
+                }
+
+//                m_log.DebugFormat(
+//                    "[SCRIPT INSTANCE]: Looking to load {0} from assembly {1} in {2}", 
+//                    scriptType.FullName, Path.GetFileNameWithoutExtension(assembly), Engine.World.Name);
+
                 if (dom != System.AppDomain.CurrentDomain)
-                    m_Script = (IScript)dom.CreateInstanceAndUnwrap(
+                    m_Script 
+                        = (IScript)dom.CreateInstanceAndUnwrap(
                             Path.GetFileNameWithoutExtension(assembly),
-                            "SecondLife.Script");
+                            scriptType.FullName,
+                            false,
+                            BindingFlags.Default,
+                            null,
+                            constructorParams,
+                            null,
+                            null,
+                            null);
                 else
-                    m_Script = (IScript)Assembly.Load(
-                            Path.GetFileNameWithoutExtension(assembly)).CreateInstance(
-                            "SecondLife.Script");
+                    m_Script 
+                        = (IScript)scriptAssembly.CreateInstance(
+                            scriptType.FullName, 
+                            false, 
+                            BindingFlags.Default, 
+                            null, 
+                            constructorParams, 
+                            null, 
+                            null);
 
                 //ILease lease = (ILease)RemotingServices.GetLifetimeService(m_Script as ScriptBaseClass);
                 //RemotingServices.GetLifetimeService(m_Script as ScriptBaseClass);
@@ -254,8 +327,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
             catch (Exception e)
             {
                 m_log.ErrorFormat(
-                    "[SCRIPT INSTANCE]: Error loading assembly {0}.  Exception {1}{2}",
-                    assembly, e.Message, e.StackTrace);
+                    "[SCRIPT INSTANCE]: Not starting script {0} (id {1}) in part {2} (id {3}) in object {4} in {5}.  Error loading assembly {6}.  Exception {7}{8}",
+                    ScriptTask.Name, ScriptTask.ItemID, Part.Name, Part.UUID, Part.ParentGroup.Name, Engine.World.Name, assembly, e.Message, e.StackTrace);
+
+                return false;
             }
 
             try
@@ -267,16 +342,16 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
 
 //                // m_log.Debug("[Script] Script instance created");
 
-                part.SetScriptEvents(ItemID,
+                Part.SetScriptEvents(ItemID,
                                      (int)m_Script.GetStateEventFlags(State));
             }
             catch (Exception e)
             {
                 m_log.ErrorFormat(
-                    "[SCRIPT INSTANCE]: Error loading script instance from assembly {0}.  Exception {1}{2}",
-                    assembly, e.Message, e.StackTrace);
+                    "[SCRIPT INSTANCE]: Not starting script {0} (id {1}) in part {2} (id {3}) in object {4} in {5}.  Error initializing script instance.  Exception {6}{7}",
+                    ScriptTask.Name, ScriptTask.ItemID, Part.Name, Part.UUID, Part.ParentGroup.Name, Engine.World.Name, e.Message, e.StackTrace);
 
-                return;
+                return false;
             }
 
             m_SaveState = true;
@@ -309,7 +384,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
 
 //                            m_log.DebugFormat("[Script] Successfully retrieved state for script {0}.{1}", PrimName, m_ScriptName);
 
-                            part.SetScriptEvents(ItemID,
+                            Part.SetScriptEvents(ItemID,
                                     (int)m_Script.GetStateEventFlags(State));
 
                             if (!Running)
@@ -329,15 +404,15 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
                     else
                     {
                         m_log.WarnFormat(
-                            "[SCRIPT INSTANCE]: Unable to load script state file {0} for script {1} {2} in {3} {4} (assembly {5}).  Memory limit exceeded",
-                            savedState, ScriptName, ItemID, PrimName, ObjectID, assembly);
+                            "[SCRIPT INSTANCE]: Not starting script {0} (id {1}) in part {2} (id {3}) in object {4} in {5}.  Unable to load script state file {6}.  Memory limit exceeded.",
+                            ScriptTask.Name, ScriptTask.ItemID, Part.Name, Part.UUID, Part.ParentGroup.Name, Engine.World.Name, savedState);
                     }
                 }
                 catch (Exception e)
                 {
                      m_log.ErrorFormat(
-                         "[SCRIPT INSTANCE]: Unable to load script state file {0} for script {1} {2} in {3} {4} (assembly {5}).  XML is {6}.  Exception {7}{8}",
-                         savedState, ScriptName, ItemID, PrimName, ObjectID, assembly, xml, e.Message, e.StackTrace);
+                         "[SCRIPT INSTANCE]: Not starting script {0} (id {1}) in part {2} (id {3}) in object {4} in {5}.  Unable to load script state file {6}.  XML is {7}.  Exception {8}{9}",
+                         ScriptTask.Name, ScriptTask.ItemID, Part.Name, Part.UUID, Part.ParentGroup.Name, Engine.World.Name, savedState, xml, e.Message, e.StackTrace);
                 }
             }
 //            else
@@ -348,6 +423,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
 //                    presence.ControllingClient.SendAgentAlertMessage("Compile successful", false);
 
 //            }
+
+            return true;
         }
 
         public void Init()
@@ -521,9 +598,36 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
             }
 
             // Wait for the current event to complete.
-            if (!m_InSelfDelete && workItem.Wait(new TimeSpan((long)timeout * 100000)))
+            if (!m_InSelfDelete)
             {
-                return true;
+                if (!m_coopTermination)
+                {
+                    // If we're not co-operative terminating then try and wait for the event to complete before stopping
+                    if (workItem.Wait(timeout))
+                        return true;
+                }
+                else
+                {
+                    if (DebugLevel >= 1)
+                        m_log.DebugFormat(
+                            "[SCRIPT INSTANCE]: Co-operatively stopping script {0} {1} in {2} {3}",
+                            ScriptName, ItemID, PrimName, ObjectID);
+
+                    // This will terminate the event on next handle check by the script.
+                    m_coopSleepHandle.Set();
+
+                    // For now, we will wait forever since the event should always cleanly terminate once LSL loop
+                    // checking is implemented.  May want to allow a shorter timeout option later.
+                    if (workItem.Wait(Timeout.Infinite))
+                    {
+                        if (DebugLevel >= 1)
+                            m_log.DebugFormat(
+                                "[SCRIPT INSTANCE]: Co-operatively stopped script {0} {1} in {2} {3}",
+                                ScriptName, ItemID, PrimName, ObjectID);
+
+                        return true;
+                    }
+                }
             }
 
             lock (EventQueue)
@@ -536,11 +640,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
 
             // If the event still hasn't stopped and we the stop isn't the result of script or object removal, then
             // forcibly abort the work item (this aborts the underlying thread).
+            // Co-operative termination should never reach this point.
             if (!m_InSelfDelete)
             {
-//                m_log.ErrorFormat(
-//                    "[SCRIPT INSTANCE]: Aborting script {0} {1} in prim {2} {3} {4} {5}",
-//                    ScriptName, ItemID, PrimName, ObjectID, m_InSelfDelete, DateTime.Now.Ticks);
+                m_log.DebugFormat(
+                    "[SCRIPT INSTANCE]: Aborting unstopped script {0} {1} in prim {2}, localID {3}, timeout was {4} ms", 
+                    ScriptName, ItemID, PrimName, LocalID, timeout);
 
                 workItem.Abort();
             }
@@ -696,19 +801,41 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
             {
                 
 //                m_log.DebugFormat("[XEngine]: Processing event {0} for {1}", data.EventName, this);
+                SceneObjectPart part = Engine.World.GetSceneObjectPart(LocalID);
+
+                if (DebugLevel >= 2)
+                    m_log.DebugFormat(
+                        "[SCRIPT INSTANCE]: Processing event {0} for {1}/{2}({3})/{4}({5}) @ {6}/{7}", 
+                        data.EventName, 
+                        ScriptName, 
+                        part.Name, 
+                        part.LocalId, 
+                        part.ParentGroup.Name, 
+                        part.ParentGroup.UUID, 
+                        part.AbsolutePosition, 
+                        part.ParentGroup.Scene.Name);
 
                 m_DetectParams = data.DetectParams;
 
                 if (data.EventName == "state") // Hardcoded state change
                 {
-    //                m_log.DebugFormat("[Script] Script {0}.{1} state set to {2}",
-    //                        PrimName, ScriptName, data.Params[0].ToString());
                     State = data.Params[0].ToString();
+
+                    if (DebugLevel >= 1)
+                        m_log.DebugFormat(
+                            "[SCRIPT INSTANCE]: Changing state to {0} for {1}/{2}({3})/{4}({5}) @ {6}/{7}", 
+                            State, 
+                            ScriptName, 
+                            part.Name, 
+                            part.LocalId, 
+                            part.ParentGroup.Name, 
+                            part.ParentGroup.UUID, 
+                            part.AbsolutePosition, 
+                            part.ParentGroup.Scene.Name);
+
                     AsyncCommandManager.RemoveScript(Engine,
                         LocalID, ItemID);
 
-                    SceneObjectPart part = Engine.World.GetSceneObjectPart(
-                        LocalID);
                     if (part != null)
                     {
                         part.SetScriptEvents(ItemID,
@@ -720,8 +847,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
                     if (Engine.World.PipeEventsForScript(LocalID) ||
                         data.EventName == "control") // Don't freeze avies!
                     {
-                        SceneObjectPart part = Engine.World.GetSceneObjectPart(
-                            LocalID);
         //                m_log.DebugFormat("[Script] Delivered event {2} in state {3} to {0}.{1}",
         //                        PrimName, ScriptName, data.EventName, State);
 
@@ -763,7 +888,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
                             m_InEvent = false;
                             m_CurrentEvent = String.Empty;
 
-                            if ((!(e is TargetInvocationException) || (!(e.InnerException is SelfDeleteException) && !(e.InnerException is ScriptDeleteException))) && !(e is ThreadAbortException))
+                            if ((!(e is TargetInvocationException) 
+                                || (!(e.InnerException is SelfDeleteException) 
+                                    && !(e.InnerException is ScriptDeleteException)
+                                    && !(e.InnerException is ScriptCoopStopException))) 
+                                && !(e is ThreadAbortException))
                             {
                                 try
                                 {
@@ -776,6 +905,17 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
                                                            ChatTypeEnum.DebugChannel, 2147483647,
                                                            part.AbsolutePosition,
                                                            part.Name, part.UUID, false);
+
+
+                                    m_log.DebugFormat(
+                                        "[SCRIPT INSTANCE]: Runtime error in script {0}, part {1} {2} at {3} in {4}, displayed error {5}, actual exception {6}", 
+                                        ScriptName, 
+                                        PrimName, 
+                                        part.UUID,
+                                        part.AbsolutePosition,
+                                        part.ParentGroup.Scene.Name, 
+                                        text.Replace("\n", "\\n"), 
+                                        e.InnerException);
                                 }
                                 catch (Exception)
                                 {
@@ -802,6 +942,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
                                 if (part != null)
                                     part.Inventory.RemoveInventoryItem(ItemID);
                             }
+                            else if ((e is TargetInvocationException) && (e.InnerException is ScriptCoopStopException))
+                            {
+                                if (DebugLevel >= 1)
+                                    m_log.DebugFormat(
+                                        "[SCRIPT INSTANCE]: Script {0}.{1} in event {2}, state {3} stopped co-operatively.",
+                                        PrimName, ScriptName, data.EventName, State);
+                            }
                         }
                     }
                 }
@@ -810,6 +957,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
                 // script engine to run the next event.
                 lock (EventQueue)
                 {
+                    EventsProcessed++;
+
                     if (EventQueue.Count > 0 && Running && !ShuttingDown)
                     {
                         m_CurrentWorkItem = Engine.QueueEventHandler(this);
@@ -834,7 +983,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
             return (DateTime.Now - m_EventStart).Seconds;
         }
 
-        public void ResetScript()
+        public void ResetScript(int timeout)
         {
             if (m_Script == null)
                 return;
@@ -844,7 +993,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
             RemoveState();
             ReleaseControls();
 
-            Stop(0);
+            Stop(timeout);
             SceneObjectPart part = Engine.World.GetSceneObjectPart(LocalID);
             part.Inventory.GetInventoryItem(ItemID).PermsMask = 0;
             part.Inventory.GetInventoryItem(ItemID).PermsGranter = UUID.Zero;
@@ -1015,7 +1164,6 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
                                     "({0}): {1}", scriptLine - 1,
                                     e.InnerException.Message);
 
-                            System.Console.WriteLine(e.ToString()+"\n");
                             return message;
                         }
                     }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Instance/Tests/CoopTerminationTests.cs b/OpenSim/Region/ScriptEngine/Shared/Instance/Tests/CoopTerminationTests.cs
new file mode 100644
index 0000000..ac822c6
--- /dev/null
+++ b/OpenSim/Region/ScriptEngine/Shared/Instance/Tests/CoopTerminationTests.cs
@@ -0,0 +1,513 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using Nini.Config;
+using NUnit.Framework;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Region.CoreModules.Scripting.WorldComm;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.ScriptEngine.XEngine;
+using OpenSim.Tests.Common;
+using OpenSim.Tests.Common.Mock;
+
+namespace OpenSim.Region.ScriptEngine.Shared.Instance.Tests
+{
+    /// <summary>
+    /// Test that co-operative script thread termination is working correctly.
+    /// </summary>
+    [TestFixture]
+    public class CoopTerminationTests : OpenSimTestCase
+    {
+        private TestScene m_scene;
+        private OpenSim.Region.ScriptEngine.XEngine.XEngine m_xEngine;
+
+        private AutoResetEvent m_chatEvent;
+        private AutoResetEvent m_stoppedEvent;
+
+        private OSChatMessage m_osChatMessageReceived;
+
+        /// <summary>
+        /// Number of chat messages received so far.  Reset before each test.
+        /// </summary>
+        private int m_chatMessagesReceived;
+
+        /// <summary>
+        /// Number of chat messages expected.  m_chatEvent is not fired until this number is reached or exceeded.
+        /// </summary>
+        private int m_chatMessagesThreshold;
+
+        [SetUp]
+        public void Init()
+        {
+            m_osChatMessageReceived = null;
+            m_chatMessagesReceived = 0;
+            m_chatMessagesThreshold = 0;
+            m_chatEvent = new AutoResetEvent(false);
+            m_stoppedEvent = new AutoResetEvent(false);
+
+            //AppDomain.CurrentDomain.SetData("APPBASE", Environment.CurrentDirectory + "/bin");
+//            Console.WriteLine(AppDomain.CurrentDomain.BaseDirectory);
+            m_xEngine = new OpenSim.Region.ScriptEngine.XEngine.XEngine();
+
+            IniConfigSource configSource = new IniConfigSource();
+            
+            IConfig startupConfig = configSource.AddConfig("Startup");
+            startupConfig.Set("DefaultScriptEngine", "XEngine");
+
+            IConfig xEngineConfig = configSource.AddConfig("XEngine");
+            xEngineConfig.Set("Enabled", "true");
+            xEngineConfig.Set("StartDelay", "0");
+
+            // These tests will not run with AppDomainLoading = true, at least on mono.  For unknown reasons, the call
+            // to AssemblyResolver.OnAssemblyResolve fails.
+            xEngineConfig.Set("AppDomainLoading", "false");
+
+            xEngineConfig.Set("ScriptStopStrategy", "co-op");
+
+            // Make sure loops aren't actually being terminated by a script delay wait.
+            xEngineConfig.Set("ScriptDelayFactor", 0);
+
+            // This is really just set for debugging the test.
+            xEngineConfig.Set("WriteScriptSourceToDebugFile", true);
+
+            // Set to false if we need to debug test so the old scripts don't get wiped before each separate test
+//            xEngineConfig.Set("DeleteScriptsOnStartup", false);
+
+            // This is not currently used at all for co-op termination.  Bumping up to demonstrate that co-op termination
+            // has an effect - without it tests will fail due to a 120 second wait for the event to finish.
+            xEngineConfig.Set("WaitForEventCompletionOnScriptStop", 120000);
+
+            m_scene = new SceneHelpers().SetupScene("My Test", TestHelpers.ParseTail(0x9999), 1000, 1000, configSource);
+            SceneHelpers.SetupSceneModules(m_scene, configSource, m_xEngine);
+            m_scene.StartScripts();
+        }
+
+        /// <summary>
+        /// Test co-operative termination on derez of an object containing a script with a long-running event.
+        /// </summary>
+        /// <remarks>
+        /// TODO: Actually compiling the script is incidental to this test.  Really want a way to compile test scripts
+        /// within the build itself.
+        /// </remarks>
+        [Test]
+        public void TestStopOnLongSleep()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        llSay(0, ""Thin Lizzy"");
+        llSleep(60);
+    }
+}";
+
+            TestStop(script);
+        }
+
+        [Test]
+        public void TestNoStopOnSingleStatementForLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;        
+        for (i = 0; i <= 1; i++) llSay(0, ""Iter "" + (string)i);
+    }
+}";
+
+            TestSingleStatementNoStop(script);
+        }
+
+        [Test]
+        public void TestStopOnLongSingleStatementForLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;
+        llSay(0, ""Thin Lizzy"");
+        
+        for (i = 0; i < 2147483647; i++) llSay(0, ""Iter "" + (string)i);
+    }
+}";
+
+            TestStop(script);
+        }
+
+        [Test]
+        public void TestStopOnLongCompoundStatementForLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;
+        llSay(0, ""Thin Lizzy"");
+        
+        for (i = 0; i < 2147483647; i++) 
+        {
+            llSay(0, ""Iter "" + (string)i);
+        }
+    }
+}";
+
+            TestStop(script);
+        }
+
+        [Test]
+        public void TestNoStopOnSingleStatementWhileLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;        
+        while (i < 2) llSay(0, ""Iter "" + (string)i++);
+    }
+}";
+
+            TestSingleStatementNoStop(script);
+        }
+
+        [Test]
+        public void TestStopOnLongSingleStatementWhileLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;
+        llSay(0, ""Thin Lizzy"");
+
+        while (1 == 1)        
+            llSay(0, ""Iter "" + (string)i++);
+    }
+}";
+
+            TestStop(script);
+        }
+
+        [Test]
+        public void TestStopOnLongCompoundStatementWhileLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;
+        llSay(0, ""Thin Lizzy"");
+
+        while (1 == 1) 
+        {
+            llSay(0, ""Iter "" + (string)i++);
+        }
+    }
+}";
+
+            TestStop(script);
+        }
+
+        [Test]
+        public void TestNoStopOnSingleStatementDoWhileLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;
+
+        do llSay(0, ""Iter "" + (string)i++);
+        while (i < 2);
+    }
+}";
+
+            TestSingleStatementNoStop(script);
+        }
+
+        [Test]
+        public void TestStopOnLongSingleStatementDoWhileLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;
+        llSay(0, ""Thin Lizzy"");
+
+        do llSay(0, ""Iter "" + (string)i++);
+        while (1 == 1);
+    }
+}";
+
+            TestStop(script);
+        }
+
+        [Test]
+        public void TestStopOnLongCompoundStatementDoWhileLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;
+        llSay(0, ""Thin Lizzy"");
+
+        do 
+        {
+            llSay(0, ""Iter "" + (string)i++);
+        } while (1 == 1);
+    }
+}";
+
+            TestStop(script);
+        }
+
+        [Test]
+        public void TestStopOnInfiniteJumpLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;
+        llSay(0, ""Thin Lizzy"");
+
+        @p1;      
+        llSay(0, ""Iter "" + (string)i++);
+        jump p1;
+    }
+}";
+
+            TestStop(script);
+        }
+
+        // Disabling for now as these are not particularly useful tests (since they fail due to stack overflow before
+        // termination can even be tried.
+//        [Test]
+        public void TestStopOnInfiniteUserFunctionCallLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"
+integer i = 0;
+
+ufn1()
+{
+  llSay(0, ""Iter ufn1() "" + (string)i++);
+  ufn1();
+}
+
+default
+{    
+    state_entry()
+    {
+        integer i = 0;
+        llSay(0, ""Thin Lizzy"");
+
+        ufn1();
+    }
+}";
+
+            TestStop(script);
+        }
+
+        // Disabling for now as these are not particularly useful tests (since they fail due to stack overflow before
+        // termination can even be tried.
+//        [Test]
+        public void TestStopOnInfiniteManualEventCallLoop()
+        {
+            TestHelpers.InMethod();
+//            TestHelpers.EnableLogging();
+
+            string script = 
+@"default
+{    
+    state_entry()
+    {
+        integer i = 0;
+        llSay(0, ""Thin Lizzy"");
+
+        llSay(0, ""Iter"" + (string)i++);
+        default_event_state_entry();
+    }
+}";
+
+            TestStop(script);
+        }
+
+        private SceneObjectPart CreateScript(string script, string itemName, UUID userId)
+        {
+//            UUID objectId = TestHelpers.ParseTail(0x100);
+//            UUID itemId = TestHelpers.ParseTail(0x3);
+
+            SceneObjectGroup so 
+                = SceneHelpers.CreateSceneObject(1, userId, string.Format("Object for {0}", itemName), 0x100);
+            m_scene.AddNewSceneObject(so, true);
+
+            InventoryItemBase itemTemplate = new InventoryItemBase();
+//            itemTemplate.ID = itemId;
+            itemTemplate.Name = itemName;
+            itemTemplate.Folder = so.UUID;
+            itemTemplate.InvType = (int)InventoryType.LSL;
+
+            m_scene.EventManager.OnChatFromWorld += OnChatFromWorld;
+
+            return m_scene.RezNewScript(userId, itemTemplate, script);
+        }
+
+        private void TestSingleStatementNoStop(string script)
+        {
+            // In these tests we expect to see at least 2 chat messages to confirm that the loop is working properly.
+            m_chatMessagesThreshold = 2;
+
+            UUID userId = TestHelpers.ParseTail(0x1);
+//            UUID objectId = TestHelpers.ParseTail(0x100);
+//            UUID itemId = TestHelpers.ParseTail(0x3);
+            string itemName = "TestNoStop";
+
+            SceneObjectPart partWhereRezzed = CreateScript(script, itemName, userId);
+
+            // Wait for the script to start the event before we try stopping it.
+            m_chatEvent.WaitOne(60000);
+
+            if (m_osChatMessageReceived == null)
+                Assert.Fail("Script did not start");
+            else
+                Assert.That(m_chatMessagesReceived, Is.EqualTo(2));
+
+            bool running;
+            TaskInventoryItem scriptItem = partWhereRezzed.Inventory.GetInventoryItem(itemName);
+            Assert.That(
+                SceneObjectPartInventory.TryGetScriptInstanceRunning(m_scene, scriptItem, out running), Is.True);
+            Assert.That(running, Is.True);
+        }
+
+        private void TestStop(string script)
+        {
+            // In these tests we're only interested in the first message to confirm that the script has started.
+            m_chatMessagesThreshold = 1;
+
+            UUID userId = TestHelpers.ParseTail(0x1);
+//            UUID objectId = TestHelpers.ParseTail(0x100);
+//            UUID itemId = TestHelpers.ParseTail(0x3);
+            string itemName = "TestStop";
+
+            SceneObjectPart partWhereRezzed = CreateScript(script, itemName, userId);
+            TaskInventoryItem rezzedItem = partWhereRezzed.Inventory.GetInventoryItem(itemName);
+
+            // Wait for the script to start the event before we try stopping it.
+            m_chatEvent.WaitOne(60000);
+
+            if (m_osChatMessageReceived != null)
+                Console.WriteLine("Script started with message [{0}]", m_osChatMessageReceived.Message);
+            else
+                Assert.Fail("Script did not start");
+
+            // FIXME: This is a very poor way of trying to avoid a low-probability race condition where the script
+            // executes llSay() but has not started the next statement before we try to stop it.
+            Thread.Sleep(1000);
+
+            // We need a way of carrying on if StopScript() fail, since it won't return if the script isn't actually
+            // stopped.  This kind of multi-threading is far from ideal in a regression test.
+            new Thread(() => { m_xEngine.StopScript(rezzedItem.ItemID); m_stoppedEvent.Set(); }).Start();
+
+            if (!m_stoppedEvent.WaitOne(30000))
+                Assert.Fail("Script did not co-operatively stop.");
+
+            bool running;
+            TaskInventoryItem scriptItem = partWhereRezzed.Inventory.GetInventoryItem(itemName);
+            Assert.That(
+                SceneObjectPartInventory.TryGetScriptInstanceRunning(m_scene, scriptItem, out running), Is.True);
+            Assert.That(running, Is.False);
+        }
+
+        private void OnChatFromWorld(object sender, OSChatMessage oscm)
+        {
+            Console.WriteLine("Got chat [{0}]", oscm.Message);
+            m_osChatMessageReceived = oscm;
+
+            if (++m_chatMessagesReceived >= m_chatMessagesThreshold)
+            {
+                m_scene.EventManager.OnChatFromWorld -= OnChatFromWorld;            
+                m_chatEvent.Set();
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs b/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
index c9c4753..2e61fb8 100644
--- a/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
@@ -633,19 +633,44 @@ namespace OpenSim.Region.ScriptEngine.Shared
 
             public LSL_Types.Vector3 GetVector3Item(int itemIndex)
             {
-                if(m_data[itemIndex] is LSL_Types.Vector3)
+                if (m_data[itemIndex] is LSL_Types.Vector3)
+                {
                     return (LSL_Types.Vector3)m_data[itemIndex];
+                }
+                else if(m_data[itemIndex] is OpenMetaverse.Vector3)
+                {
+                    return new LSL_Types.Vector3(
+                            (OpenMetaverse.Vector3)m_data[itemIndex]);
+                }
                 else
+                {
                     throw new InvalidCastException(string.Format(
                         "{0} expected but {1} given",
                         typeof(LSL_Types.Vector3).Name,
                         m_data[itemIndex] != null ?
                         m_data[itemIndex].GetType().Name : "null"));
+                }
             }
 
             public LSL_Types.Quaternion GetQuaternionItem(int itemIndex)
             {
-              return (LSL_Types.Quaternion)m_data[itemIndex];
+                if (m_data[itemIndex] is LSL_Types.Quaternion)
+                {
+                    return (LSL_Types.Quaternion)m_data[itemIndex];
+                }
+                else if(m_data[itemIndex] is OpenMetaverse.Quaternion)
+                {
+                    return new LSL_Types.Quaternion(
+                            (OpenMetaverse.Quaternion)m_data[itemIndex]);
+                }
+                else
+                {
+                    throw new InvalidCastException(string.Format(
+                        "{0} expected but {1} given",
+                        typeof(LSL_Types.Quaternion).Name,
+                        m_data[itemIndex] != null ?
+                        m_data[itemIndex].GetType().Name : "null"));
+                }
             }
 
             public LSL_Types.key GetKeyItem(int itemIndex)
diff --git a/OpenSim/Region/ScriptEngine/Shared/Properties/AssemblyInfo.cs b/OpenSim/Region/ScriptEngine/Shared/Properties/AssemblyInfo.cs
index e6e8777..d08b0a6 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("0.7.5.*")]
+[assembly: AssemblyVersion("0.7.6.*")]
 [assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiHttpTests.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiHttpTests.cs
new file mode 100644
index 0000000..b0baa1c
--- /dev/null
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiHttpTests.cs
@@ -0,0 +1,250 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Net;
+using System.Reflection;
+using System.Text;
+using log4net;
+using Nini.Config;
+using NUnit.Framework;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Framework.Servers;
+using OpenSim.Framework.Servers.HttpServer;
+using OpenSim.Region.CoreModules.Scripting.LSLHttp;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.ScriptEngine.Shared;
+using OpenSim.Region.ScriptEngine.Shared.Api;
+using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
+using OpenSim.Services.Interfaces;
+using OpenSim.Tests.Common;
+using OpenSim.Tests.Common.Mock;
+
+namespace OpenSim.Region.ScriptEngine.Shared.Tests
+{
+    /// <summary>
+    /// Tests for HTTP related functions in LSL
+    /// </summary>
+    [TestFixture]
+    public class LSL_ApiHttpTests : OpenSimTestCase
+    {
+        private Scene m_scene;
+        private MockScriptEngine m_engine;
+        private UrlModule m_urlModule;
+
+        private TaskInventoryItem m_scriptItem;
+        private LSL_Api m_lslApi;
+
+        [TestFixtureSetUp]
+        public void TestFixtureSetUp()
+        {
+            // Don't allow tests to be bamboozled by asynchronous events.  Execute everything on the same thread.
+            Util.FireAndForgetMethod = FireAndForgetMethod.RegressionTest;
+        }
+
+        [TestFixtureTearDown]
+        public void TestFixureTearDown()
+        {
+            // We must set this back afterwards, otherwise later tests will fail since they're expecting multiple
+            // threads.  Possibly, later tests should be rewritten so none of them require async stuff (which regression
+            // tests really shouldn't).
+            Util.FireAndForgetMethod = Util.DefaultFireAndForgetMethod;
+        }
+
+        [SetUp]
+        public override void SetUp()
+        {
+            base.SetUp();
+
+            // This is an unfortunate bit of clean up we have to do because MainServer manages things through static
+            // variables and the VM is not restarted between tests.
+            uint port = 9999;
+            MainServer.RemoveHttpServer(port);
+
+            BaseHttpServer server = new BaseHttpServer(port, false, 0, "");
+            MainServer.AddHttpServer(server);
+            MainServer.Instance = server;
+
+            server.Start();
+
+            m_engine = new MockScriptEngine();
+            m_urlModule = new UrlModule();
+
+            m_scene = new SceneHelpers().SetupScene();
+            SceneHelpers.SetupSceneModules(m_scene, new IniConfigSource(), m_engine, m_urlModule);
+
+            SceneObjectGroup so = SceneHelpers.AddSceneObject(m_scene);
+            m_scriptItem = TaskInventoryHelpers.AddScript(m_scene, so.RootPart);
+
+            // This is disconnected from the actual script - the mock engine does not set up any LSL_Api atm.
+            // Possibly this could be done and we could obtain it directly from the MockScriptEngine.
+            m_lslApi = new LSL_Api();
+            m_lslApi.Initialize(m_engine, so.RootPart, m_scriptItem, null);
+        }
+
+        [TearDown]
+        public void TearDown()
+        {
+            MainServer.Instance.Stop();
+        }       
+
+        [Test]
+        public void TestLlReleaseUrl()
+        {
+            TestHelpers.InMethod();
+
+            m_lslApi.llRequestURL();
+            string returnedUri = m_engine.PostedEvents[m_scriptItem.ItemID][0].Params[2].ToString();
+
+            {
+                // Check that the initial number of URLs is correct
+                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls - 1));
+            }
+
+            {
+                // Check releasing a non-url
+                m_lslApi.llReleaseURL("GARBAGE");
+                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls - 1));
+            }
+
+            {
+                // Check releasing a non-existing url
+                m_lslApi.llReleaseURL("http://example.com");
+                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls - 1));
+            }
+
+            {
+                // Check URL release
+                m_lslApi.llReleaseURL(returnedUri);
+                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls));
+
+                HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(returnedUri);
+
+                bool gotExpectedException = false;
+
+                try
+                {
+                    using (HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse())
+                    {}
+                }
+                catch (WebException e)
+                {
+                    using (HttpWebResponse response = (HttpWebResponse)e.Response)
+                        gotExpectedException = response.StatusCode == HttpStatusCode.NotFound;
+                }
+
+                Assert.That(gotExpectedException, Is.True);
+            }
+
+            {
+                // Check releasing the same URL again
+                m_lslApi.llReleaseURL(returnedUri);
+                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls));
+            }
+        }
+
+        [Test]
+        public void TestLlRequestUrl()
+        {
+            TestHelpers.InMethod();
+
+            string requestId = m_lslApi.llRequestURL();
+            Assert.That(requestId, Is.Not.EqualTo(UUID.Zero.ToString()));
+            string returnedUri;
+
+            {
+                // Check that URL is correctly set up
+                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls - 1));
+
+                Assert.That(m_engine.PostedEvents.ContainsKey(m_scriptItem.ItemID));
+
+                List<EventParams> events = m_engine.PostedEvents[m_scriptItem.ItemID];
+                Assert.That(events.Count, Is.EqualTo(1));
+                EventParams eventParams = events[0];
+                Assert.That(eventParams.EventName, Is.EqualTo("http_request"));
+
+                UUID returnKey;
+                string rawReturnKey = eventParams.Params[0].ToString();
+                string method = eventParams.Params[1].ToString();
+                returnedUri = eventParams.Params[2].ToString();
+
+                Assert.That(UUID.TryParse(rawReturnKey, out returnKey), Is.True);
+                Assert.That(method, Is.EqualTo(ScriptBaseClass.URL_REQUEST_GRANTED));
+                Assert.That(Uri.IsWellFormedUriString(returnedUri, UriKind.Absolute), Is.True);
+            }
+
+            {
+                // Check that request to URL works.
+                string testResponse = "Hello World";
+
+                m_engine.ClearPostedEvents();                
+                m_engine.PostEventHook 
+                    += (itemId, evp) => m_lslApi.llHTTPResponse(evp.Params[0].ToString(), 200, testResponse);
+
+//                Console.WriteLine("Trying {0}", returnedUri);
+                HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(returnedUri);
+
+                AssertHttpResponse(returnedUri, testResponse);
+
+                Assert.That(m_engine.PostedEvents.ContainsKey(m_scriptItem.ItemID));
+
+                List<EventParams> events = m_engine.PostedEvents[m_scriptItem.ItemID];
+                Assert.That(events.Count, Is.EqualTo(1));
+                EventParams eventParams = events[0];
+                Assert.That(eventParams.EventName, Is.EqualTo("http_request"));
+
+                UUID returnKey;
+                string rawReturnKey = eventParams.Params[0].ToString();
+                string method = eventParams.Params[1].ToString();
+                string body = eventParams.Params[2].ToString();
+
+                Assert.That(UUID.TryParse(rawReturnKey, out returnKey), Is.True);
+                Assert.That(method, Is.EqualTo("GET"));
+                Assert.That(body, Is.EqualTo(""));
+            }
+        }
+
+        private void AssertHttpResponse(string uri, string expectedResponse)
+        {
+            HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(uri);
+
+            using (HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse())
+            {
+                using (Stream stream = webResponse.GetResponseStream())
+                {
+                    using (StreamReader reader = new StreamReader(stream))
+                    {
+                        Assert.That(reader.ReadToEnd(), Is.EqualTo(expectedResponse));
+                    }
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiInventoryTests.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiInventoryTests.cs
index c73e22f..6dd6c17 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiInventoryTests.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiInventoryTests.cs
@@ -41,6 +41,7 @@ using OpenSim.Region.OptionalModules.World.NPC;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.ScriptEngine.Shared;
 using OpenSim.Region.ScriptEngine.Shared.Api;
+using OpenSim.Region.ScriptEngine.Shared.Instance;
 using OpenSim.Services.Interfaces;
 using OpenSim.Tests.Common;
 using OpenSim.Tests.Common.Mock;
@@ -51,14 +52,16 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
     /// Tests for inventory functions in LSL
     /// </summary>
     [TestFixture]
-    public class LSL_ApiInventoryTests
+    public class LSL_ApiInventoryTests : OpenSimTestCase
     {
         protected Scene m_scene;
         protected XEngine.XEngine m_engine;
 
         [SetUp]
-        public void SetUp()
+        public override void SetUp()
         {
+            base.SetUp();
+
             IConfigSource initConfigSource = new IniConfigSource();
             IConfig config = initConfigSource.AddConfig("XEngine");
             config.Set("Enabled", "true");
@@ -91,7 +94,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             TaskInventoryHelpers.AddSceneObject(m_scene, so1.RootPart, inventoryItemName, itemId, userId);
 
             LSL_Api api = new LSL_Api();
-            api.Initialize(m_engine, so1.RootPart, null);
+            api.Initialize(m_engine, so1.RootPart, null, null);
 
             // Create a second object
             SceneObjectGroup so2 = SceneHelpers.CreateSceneObject(1, userId, "so2", 0x100);
@@ -124,7 +127,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             SceneObjectGroup so1 = SceneHelpers.CreateSceneObject(1, user1Id, "so1", 0x10);
             m_scene.AddSceneObject(so1);
             LSL_Api api = new LSL_Api();
-            api.Initialize(m_engine, so1.RootPart, null);
+            api.Initialize(m_engine, so1.RootPart, null, null);
 
             // Create an object embedded inside the first
             UUID itemId = TestHelpers.ParseTail(0x20);
@@ -134,7 +137,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             SceneObjectGroup so2 = SceneHelpers.CreateSceneObject(1, user2Id, "so2", 0x100);
             m_scene.AddSceneObject(so2);
             LSL_Api api2 = new LSL_Api();
-            api2.Initialize(m_engine, so2.RootPart, null);
+            api2.Initialize(m_engine, so2.RootPart, null, null);
 
             // *** Firstly, we test where llAllowInventoryDrop() has not been called. ***
             api.llGiveInventory(so2.UUID.ToString(), inventoryItemName);
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiLinkingTests.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiLinkingTests.cs
index 2565ae7..ac9f93b 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiLinkingTests.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiLinkingTests.cs
@@ -41,6 +41,7 @@ using OpenSim.Region.OptionalModules.World.NPC;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.ScriptEngine.Shared;
 using OpenSim.Region.ScriptEngine.Shared.Api;
+using OpenSim.Region.ScriptEngine.Shared.Instance;
 using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
 using OpenSim.Services.Interfaces;
 using OpenSim.Tests.Common;
@@ -56,14 +57,16 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
     /// OpenSim.Region.Framework.Scenes.Tests.SceneObjectLinkingTests.
     /// </remarks>
     [TestFixture]
-    public class LSL_ApiLinkingTests
+    public class LSL_ApiLinkingTests : OpenSimTestCase
     {
         protected Scene m_scene;
         protected XEngine.XEngine m_engine;
 
         [SetUp]
-        public void SetUp()
+        public override void SetUp()
         {
+            base.SetUp();
+
             IConfigSource initConfigSource = new IniConfigSource();
             IConfig config = initConfigSource.AddConfig("XEngine");
             config.Set("Enabled", "true");
@@ -90,7 +93,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             // FIXME: This should really be a script item (with accompanying script)
             TaskInventoryItem grp1Item
                 = TaskInventoryHelpers.AddNotecard(
-                    m_scene, grp1.RootPart, "ncItem", TestHelpers.ParseTail(0x800), TestHelpers.ParseTail(0x900));
+                    m_scene, grp1.RootPart, "ncItem", TestHelpers.ParseTail(0x800), TestHelpers.ParseTail(0x900), "Hello World!");
             grp1Item.PermsMask |= ScriptBaseClass.PERMISSION_CHANGE_LINKS;
 
             SceneObjectGroup grp2 = SceneHelpers.CreateSceneObject(2, ownerId, "grp2-", 0x20);
@@ -102,7 +105,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             m_scene.AddSceneObject(grp2);
 
             LSL_Api apiGrp1 = new LSL_Api();
-            apiGrp1.Initialize(m_engine, grp1.RootPart, grp1Item);
+            apiGrp1.Initialize(m_engine, grp1.RootPart, grp1Item, null);
 
             apiGrp1.llCreateLink(grp2.UUID.ToString(), ScriptBaseClass.TRUE);
 
@@ -124,12 +127,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             // FIXME: This should really be a script item (with accompanying script)
             TaskInventoryItem grp1Item
                 = TaskInventoryHelpers.AddNotecard(
-                    m_scene, grp1.RootPart, "ncItem", TestHelpers.ParseTail(0x800), TestHelpers.ParseTail(0x900));
+                    m_scene, grp1.RootPart, "ncItem", TestHelpers.ParseTail(0x800), TestHelpers.ParseTail(0x900), "Hello World!");
             
             grp1Item.PermsMask |= ScriptBaseClass.PERMISSION_CHANGE_LINKS;
 
             LSL_Api apiGrp1 = new LSL_Api();
-            apiGrp1.Initialize(m_engine, grp1.RootPart, grp1Item);
+            apiGrp1.Initialize(m_engine, grp1.RootPart, grp1Item, null);
 
             apiGrp1.llBreakLink(2);
 
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiListTests.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiListTests.cs
index dd23be8..60de5cb 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiListTests.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiListTests.cs
@@ -34,6 +34,7 @@ using OpenSim.Region.ScriptEngine.Shared;
 using OpenSim.Region.Framework.Scenes;
 using Nini.Config;
 using OpenSim.Region.ScriptEngine.Shared.Api;
+using OpenSim.Region.ScriptEngine.Shared.Instance;
 using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
 using OpenMetaverse;
 using OpenSim.Tests.Common.Mock;
@@ -46,13 +47,15 @@ using LSL_String = OpenSim.Region.ScriptEngine.Shared.LSL_Types.LSLString;
 namespace OpenSim.Region.ScriptEngine.Shared.Tests
 {
     [TestFixture]
-    public class LSL_ApiListTests
+    public class LSL_ApiListTests : OpenSimTestCase
     {
         private LSL_Api m_lslApi;
 
         [SetUp]
-        public void SetUp()
+        public override void SetUp()
         {
+            base.SetUp();
+
             IConfigSource initConfigSource = new IniConfigSource();
             IConfig config = initConfigSource.AddConfig("XEngine");
             config.Set("Enabled", "true");
@@ -65,7 +68,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             engine.AddRegion(scene);
 
             m_lslApi = new LSL_Api();
-            m_lslApi.Initialize(engine, part, null);
+            m_lslApi.Initialize(engine, part, null, null);
         }
  
         [Test]
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiNotecardTests.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiNotecardTests.cs
new file mode 100644
index 0000000..c92bcdb
--- /dev/null
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiNotecardTests.cs
@@ -0,0 +1,270 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Net;
+using System.Reflection;
+using System.Text;
+using log4net;
+using Nini.Config;
+using NUnit.Framework;
+using OpenMetaverse;
+using OpenSim.Framework;
+using OpenSim.Framework.Servers;
+using OpenSim.Framework.Servers.HttpServer;
+using OpenSim.Region.CoreModules.Scripting.LSLHttp;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.ScriptEngine.Shared;
+using OpenSim.Region.ScriptEngine.Shared.Api;
+using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
+using OpenSim.Services.Interfaces;
+using OpenSim.Tests.Common;
+using OpenSim.Tests.Common.Mock;
+
+namespace OpenSim.Region.ScriptEngine.Shared.Tests
+{
+    /// <summary>
+    /// Tests for notecard related functions in LSL
+    /// </summary>
+    [TestFixture]
+    public class LSL_ApiNotecardTests : OpenSimTestCase
+    {
+        private Scene m_scene;
+        private MockScriptEngine m_engine;
+
+        private SceneObjectGroup m_so;
+        private TaskInventoryItem m_scriptItem;
+        private LSL_Api m_lslApi;
+
+        [TestFixtureSetUp]
+        public void TestFixtureSetUp()
+        {
+            // Don't allow tests to be bamboozled by asynchronous events.  Execute everything on the same thread.
+            Util.FireAndForgetMethod = FireAndForgetMethod.RegressionTest;
+        }
+
+        [TestFixtureTearDown]
+        public void TestFixureTearDown()
+        {
+            // We must set this back afterwards, otherwise later tests will fail since they're expecting multiple
+            // threads.  Possibly, later tests should be rewritten so none of them require async stuff (which regression
+            // tests really shouldn't).
+            Util.FireAndForgetMethod = Util.DefaultFireAndForgetMethod;
+        }
+
+        [SetUp]
+        public override void SetUp()
+        {
+            base.SetUp();
+
+            m_engine = new MockScriptEngine();
+
+            m_scene = new SceneHelpers().SetupScene();
+            SceneHelpers.SetupSceneModules(m_scene, new IniConfigSource(), m_engine);
+
+            m_so = SceneHelpers.AddSceneObject(m_scene);
+            m_scriptItem = TaskInventoryHelpers.AddScript(m_scene, m_so.RootPart);
+
+            // This is disconnected from the actual script - the mock engine does not set up any LSL_Api atm.
+            // Possibly this could be done and we could obtain it directly from the MockScriptEngine.
+            m_lslApi = new LSL_Api();
+            m_lslApi.Initialize(m_engine, m_so.RootPart, m_scriptItem, null);
+        }
+
+        [Test]
+        public void TestLlGetNotecardLine()
+        {
+            TestHelpers.InMethod();
+
+            string[] ncLines = { "One", "Two", "Three" };
+
+            TaskInventoryItem ncItem 
+                = TaskInventoryHelpers.AddNotecard(m_scene, m_so.RootPart, "nc", "1", "10", string.Join("\n", ncLines));
+
+            AssertValidNotecardLine(ncItem.Name, 0, ncLines[0]);
+            AssertValidNotecardLine(ncItem.Name, 2, ncLines[2]);
+            AssertValidNotecardLine(ncItem.Name, 3, ScriptBaseClass.EOF);
+            AssertValidNotecardLine(ncItem.Name, 4, ScriptBaseClass.EOF);
+
+            // XXX: Is this correct or do we really expect no dataserver event to fire at all?
+            AssertValidNotecardLine(ncItem.Name, -1, "");
+            AssertValidNotecardLine(ncItem.Name, -2, "");
+        }
+
+        [Test]
+        public void TestLlGetNotecardLine_NoNotecard()
+        {
+            TestHelpers.InMethod();
+
+            AssertInValidNotecardLine("nc", 0);
+        }
+
+        [Test]
+        public void TestLlGetNotecardLine_NotANotecard()
+        {
+            TestHelpers.InMethod();
+
+            TaskInventoryItem ncItem = TaskInventoryHelpers.AddScript(m_scene, m_so.RootPart, "nc1", "Not important");
+
+            AssertInValidNotecardLine(ncItem.Name, 0);
+        }
+
+        private void AssertValidNotecardLine(string ncName, int lineNumber, string assertLine)
+        {
+            string key = m_lslApi.llGetNotecardLine(ncName, lineNumber);
+            Assert.That(key, Is.Not.EqualTo(UUID.Zero.ToString()));
+        
+            Assert.That(m_engine.PostedEvents.Count, Is.EqualTo(1));
+            Assert.That(m_engine.PostedEvents.ContainsKey(m_scriptItem.ItemID));
+
+            List<EventParams> events = m_engine.PostedEvents[m_scriptItem.ItemID];
+            Assert.That(events.Count, Is.EqualTo(1));
+            EventParams eventParams = events[0];
+
+            Assert.That(eventParams.EventName, Is.EqualTo("dataserver"));
+            Assert.That(eventParams.Params[0].ToString(), Is.EqualTo(key));
+            Assert.That(eventParams.Params[1].ToString(), Is.EqualTo(assertLine));
+
+            m_engine.ClearPostedEvents();
+        }
+
+        private void AssertInValidNotecardLine(string ncName, int lineNumber)
+        {
+            string key = m_lslApi.llGetNotecardLine(ncName, lineNumber);
+            Assert.That(key, Is.EqualTo(UUID.Zero.ToString()));
+
+            Assert.That(m_engine.PostedEvents.Count, Is.EqualTo(0));
+        }
+
+//        [Test]
+//        public void TestLlReleaseUrl()
+//        {
+//            TestHelpers.InMethod();
+//
+//            m_lslApi.llRequestURL();
+//            string returnedUri = m_engine.PostedEvents[m_scriptItem.ItemID][0].Params[2].ToString();
+//
+//            {
+//                // Check that the initial number of URLs is correct
+//                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls - 1));
+//            }
+//
+//            {
+//                // Check releasing a non-url
+//                m_lslApi.llReleaseURL("GARBAGE");
+//                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls - 1));
+//            }
+//
+//            {
+//                // Check releasing a non-existing url
+//                m_lslApi.llReleaseURL("http://example.com");
+//                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls - 1));
+//            }
+//
+//            {
+//                // Check URL release
+//                m_lslApi.llReleaseURL(returnedUri);
+//                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls));
+//
+//                HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(returnedUri);
+//
+//                bool gotExpectedException = false;
+//
+//                try
+//                {
+//                    using (HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse())
+//                    {}
+//                }
+//                catch (WebException e)
+//                {
+//                    using (HttpWebResponse response = (HttpWebResponse)e.Response)
+//                        gotExpectedException = response.StatusCode == HttpStatusCode.NotFound;
+//                }
+//
+//                Assert.That(gotExpectedException, Is.True);
+//            }
+//
+//            {
+//                // Check releasing the same URL again
+//                m_lslApi.llReleaseURL(returnedUri);
+//                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls));
+//            }
+//        }
+//
+//        [Test]
+//        public void TestLlRequestUrl()
+//        {
+//            TestHelpers.InMethod();
+//
+//            string requestId = m_lslApi.llRequestURL();
+//            Assert.That(requestId, Is.Not.EqualTo(UUID.Zero.ToString()));
+//            string returnedUri;
+//
+//            {
+//                // Check that URL is correctly set up
+//                Assert.That(m_lslApi.llGetFreeURLs().value, Is.EqualTo(m_urlModule.TotalUrls - 1));
+//
+//                Assert.That(m_engine.PostedEvents.ContainsKey(m_scriptItem.ItemID));
+//
+//                List<EventParams> events = m_engine.PostedEvents[m_scriptItem.ItemID];
+//                Assert.That(events.Count, Is.EqualTo(1));
+//                EventParams eventParams = events[0];
+//                Assert.That(eventParams.EventName, Is.EqualTo("http_request"));
+//
+//                UUID returnKey;
+//                string rawReturnKey = eventParams.Params[0].ToString();
+//                string method = eventParams.Params[1].ToString();
+//                returnedUri = eventParams.Params[2].ToString();
+//
+//                Assert.That(UUID.TryParse(rawReturnKey, out returnKey), Is.True);
+//                Assert.That(method, Is.EqualTo(ScriptBaseClass.URL_REQUEST_GRANTED));
+//                Assert.That(Uri.IsWellFormedUriString(returnedUri, UriKind.Absolute), Is.True);
+//            }
+//
+//            {
+//                // Check that request to URL works.
+//                string testResponse = "Hello World";
+//
+//                m_engine.ClearPostedEvents();                
+//                m_engine.PostEventHook 
+//                    += (itemId, evp) => m_lslApi.llHTTPResponse(evp.Params[0].ToString(), 200, testResponse);
+//
+////                Console.WriteLine("Trying {0}", returnedUri);
+//                HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(returnedUri);
+//
+//                AssertHttpResponse(returnedUri, testResponse);
+//
+//                Assert.That(m_engine.PostedEvents.ContainsKey(m_scriptItem.ItemID));
+//
+//                List<EventParams> events = m_engine.PostedEvents[m_scriptItem.ItemID];
+//                Assert.That(events.Count, Is.EqualTo(1));
+//                EventParams eventParams = events[0];
+//                Assert.That(eventParams.EventName, Is.EqualTo("http_request"));
+//
+//                UUID returnKey;
+//                string rawReturnKey = eventParams.Params[0].ToString();
+//                string method = eventParams.Params[1].ToString();
+//                string body = eventParams.Params[2].ToString();
+//
+//                Assert.That(UUID.TryParse(rawReturnKey, out returnKey), Is.True);
+//                Assert.That(method, Is.EqualTo("GET"));
+//                Assert.That(body, Is.EqualTo(""));
+//            }
+//        }
+//
+//        private void AssertHttpResponse(string uri, string expectedResponse)
+//        {
+//            HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(uri);
+//
+//            using (HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse())
+//            {
+//                using (Stream stream = webResponse.GetResponseStream())
+//                {
+//                    using (StreamReader reader = new StreamReader(stream))
+//                    {
+//                        Assert.That(reader.ReadToEnd(), Is.EqualTo(expectedResponse));
+//                    }
+//                }
+//            }
+//        }
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs
index c41d1e7..e97ae06 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_ApiTest.cs
@@ -33,6 +33,7 @@ using OpenSim.Region.ScriptEngine.Shared;
 using OpenSim.Region.Framework.Scenes;
 using Nini.Config;
 using OpenSim.Region.ScriptEngine.Shared.Api;
+using OpenSim.Region.ScriptEngine.Shared.Instance;
 using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
 using OpenMetaverse;
 using System;
@@ -66,7 +67,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             engine.AddRegion(scene);
 
             m_lslApi = new LSL_Api();
-            m_lslApi.Initialize(engine, part, null);
+            m_lslApi.Initialize(engine, part, null, null);
         }
 
         [Test]
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLFloat.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLFloat.cs
index 3ed2562..c8c7f82 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLFloat.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLFloat.cs
@@ -33,7 +33,7 @@ using OpenSim.Region.ScriptEngine.Shared;
 namespace OpenSim.Region.ScriptEngine.Shared.Tests
 {
     [TestFixture]
-    public class LSL_TypesTestLSLFloat
+    public class LSL_TypesTestLSLFloat : OpenSimTestCase
     {
         // Used for testing equality of two floats.
         private double _lowPrecisionTolerance = 0.000001;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLInteger.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLInteger.cs
index 8d1169a..c664108 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLInteger.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLInteger.cs
@@ -33,7 +33,7 @@ using OpenSim.Region.ScriptEngine.Shared;
 namespace OpenSim.Region.ScriptEngine.Shared.Tests
 {
     [TestFixture]
-    public class LSL_TypesTestLSLInteger
+    public class LSL_TypesTestLSLInteger : OpenSimTestCase
     {
         private Dictionary<double, int> m_doubleIntSet;
         private Dictionary<string, int> m_stringIntSet;
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLString.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLString.cs
index c4ca1a8..8550f2d 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLString.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestLSLString.cs
@@ -33,7 +33,7 @@ using OpenSim.Region.ScriptEngine.Shared;
 namespace OpenSim.Region.ScriptEngine.Shared.Tests
 {
     [TestFixture]
-    public class LSL_TypesTestLSLString
+    public class LSL_TypesTestLSLString : OpenSimTestCase
     {
         private Dictionary<double, string> m_doubleStringSet;
 
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestList.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestList.cs
index b81225f..71b88bc 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestList.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestList.cs
@@ -36,7 +36,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
     /// Tests the LSL_Types.list class.
     /// </summary>
     [TestFixture]
-    public class LSL_TypesTestList
+    public class LSL_TypesTestList : OpenSimTestCase
     {
         /// <summary>
         /// Tests concatenating a string to a list.
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestVector3.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestVector3.cs
index ebf8001..0c838af 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestVector3.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/LSL_TypesTestVector3.cs
@@ -36,7 +36,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
     /// Tests for Vector3
     /// </summary>
     [TestFixture]
-    public class LSL_TypesTestVector3
+    public class LSL_TypesTestVector3 : OpenSimTestCase
     {
         [Test]
         public void TestDotProduct()
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiAppearanceTest.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiAppearanceTest.cs
index c401794..c88bad5 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiAppearanceTest.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiAppearanceTest.cs
@@ -41,6 +41,7 @@ using OpenSim.Region.OptionalModules.World.NPC;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.ScriptEngine.Shared;
 using OpenSim.Region.ScriptEngine.Shared.Api;
+using OpenSim.Region.ScriptEngine.Shared.Instance;
 using OpenSim.Services.Interfaces;
 using OpenSim.Tests.Common;
 using OpenSim.Tests.Common.Mock;
@@ -51,14 +52,16 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
     /// Tests for OSSL_Api
     /// </summary>
     [TestFixture]
-    public class OSSL_ApiAppearanceTest
+    public class OSSL_ApiAppearanceTest : OpenSimTestCase
     {
         protected Scene m_scene;
         protected XEngine.XEngine m_engine;
 
         [SetUp]
-        public void SetUp()
+        public override void SetUp()
         {
+            base.SetUp();
+
             IConfigSource initConfigSource = new IniConfigSource();
             IConfig config = initConfigSource.AddConfig("XEngine");
             config.Set("Enabled", "true");
@@ -91,7 +94,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             m_scene.AddSceneObject(so);
 
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, part, null);
+            osslApi.Initialize(m_engine, part, null, null);
 
             string notecardName = "appearanceNc";
 
@@ -132,7 +135,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             m_scene.AddSceneObject(so);
 
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, part, null);
+            osslApi.Initialize(m_engine, part, null, null);
 
             string notecardName = "appearanceNc";
 
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiAttachmentTests.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiAttachmentTests.cs
index 5ed1f3d..e422f5b 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiAttachmentTests.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiAttachmentTests.cs
@@ -41,6 +41,7 @@ using OpenSim.Region.CoreModules.Framework.InventoryAccess;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.ScriptEngine.Shared;
 using OpenSim.Region.ScriptEngine.Shared.Api;
+using OpenSim.Region.ScriptEngine.Shared.Instance;
 using OpenSim.Services.Interfaces;
 using OpenSim.Tests.Common;
 using OpenSim.Tests.Common.Mock;
@@ -98,9 +99,9 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             SceneObjectGroup inWorldObj = SceneHelpers.AddSceneObject(m_scene, "inWorldObj", ua1.PrincipalID);
             TaskInventoryItem scriptItem = TaskInventoryHelpers.AddScript(m_scene, inWorldObj.RootPart);
 
-            new LSL_Api().Initialize(m_engine, inWorldObj.RootPart, scriptItem);
+            new LSL_Api().Initialize(m_engine, inWorldObj.RootPart, scriptItem, null);
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, inWorldObj.RootPart, scriptItem);
+            osslApi.Initialize(m_engine, inWorldObj.RootPart, scriptItem, null);
 
 //            SceneObjectGroup sog1 = SceneHelpers.CreateSceneObject(1, ua1.PrincipalID);
 
@@ -144,13 +145,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             SceneObjectGroup inWorldObj = SceneHelpers.AddSceneObject(m_scene, "inWorldObj", ua1.PrincipalID);
             TaskInventoryItem scriptItem = TaskInventoryHelpers.AddScript(m_scene, inWorldObj.RootPart);
 
-            new LSL_Api().Initialize(m_engine, inWorldObj.RootPart, scriptItem);
+            new LSL_Api().Initialize(m_engine, inWorldObj.RootPart, scriptItem, null);
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, inWorldObj.RootPart, scriptItem);
+            osslApi.Initialize(m_engine, inWorldObj.RootPart, scriptItem, null);
 
             // Create an object embedded inside the first
             TaskInventoryHelpers.AddNotecard(
-                m_scene, inWorldObj.RootPart, taskInvObjItemName, taskInvObjItemId, TestHelpers.ParseTail(0x900));
+                m_scene, inWorldObj.RootPart, taskInvObjItemName, taskInvObjItemId, TestHelpers.ParseTail(0x900), "Hello World!");
 
             bool exceptionCaught = false;
 
@@ -192,12 +193,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             SceneObjectGroup inWorldObj = SceneHelpers.AddSceneObject(m_scene, "inWorldObj", ua1.PrincipalID);
             TaskInventoryItem scriptItem = TaskInventoryHelpers.AddScript(m_scene, inWorldObj.RootPart);
 
-            new LSL_Api().Initialize(m_engine, inWorldObj.RootPart, scriptItem);
+            new LSL_Api().Initialize(m_engine, inWorldObj.RootPart, scriptItem, null);
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, inWorldObj.RootPart, scriptItem);
+            osslApi.Initialize(m_engine, inWorldObj.RootPart, scriptItem, null);
 
             // Create an object embedded inside the first
-            TaskInventoryHelpers.AddSceneObject(m_scene, inWorldObj.RootPart, taskInvObjItemName, taskInvObjItemId, ua1.PrincipalID);
+            TaskInventoryHelpers.AddSceneObject(
+                m_scene, inWorldObj.RootPart, taskInvObjItemName, taskInvObjItemId, ua1.PrincipalID);
 
             ScenePresence sp2 = SceneHelpers.AddScenePresence(m_scene, ua2);
 
diff --git a/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiNpcTests.cs b/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiNpcTests.cs
index b49bcc2..74f010e 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiNpcTests.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Tests/OSSL_ApiNpcTests.cs
@@ -42,6 +42,7 @@ using OpenSim.Region.OptionalModules.World.NPC;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.ScriptEngine.Shared;
 using OpenSim.Region.ScriptEngine.Shared.Api;
+using OpenSim.Region.ScriptEngine.Shared.Instance;
 using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
 using OpenSim.Services.Interfaces;
 using OpenSim.Tests.Common;
@@ -99,7 +100,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             m_scene.AddSceneObject(so);
 
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, part, null);
+            osslApi.Initialize(m_engine, part, null, null);
 
             string notecardName = "appearanceNc";
             osslApi.osOwnerSaveAppearance(notecardName);
@@ -125,14 +126,12 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             m_scene.AddSceneObject(so);
 
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, so.RootPart, null);
+            osslApi.Initialize(m_engine, so.RootPart, null, null);
 
-            string npcRaw;
             bool gotExpectedException = false;
             try
             {
-                npcRaw
-                    = osslApi.osNpcCreate("Jane", "Doe", new LSL_Types.Vector3(128, 128, 128), "not existing notecard name");
+                osslApi.osNpcCreate("Jane", "Doe", new LSL_Types.Vector3(128, 128, 128), "not existing notecard name");
             }
             catch (ScriptException)
             {
@@ -162,7 +161,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             m_scene.AddSceneObject(so);
 
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, part, null);
+            osslApi.Initialize(m_engine, part, null, null);
 
             string notecardName = "appearanceNc";
             osslApi.osOwnerSaveAppearance(notecardName);
@@ -196,7 +195,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             m_scene.AddSceneObject(so);
 
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, part, null);
+            osslApi.Initialize(m_engine, part, null, null);
 
             osslApi.osOwnerSaveAppearance(firstAppearanceNcName);
 
@@ -223,7 +222,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             // Store an avatar with a different height from default in a notecard.
             UUID userId = TestHelpers.ParseTail(0x1);
             float firstHeight = 1.9f;
-            float secondHeight = 2.1f;
+//            float secondHeight = 2.1f;
             string firstAppearanceNcName = "appearanceNc1";
             string secondAppearanceNcName = "appearanceNc2";
 
@@ -234,7 +233,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             m_scene.AddSceneObject(so);
 
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, part, null);
+            osslApi.Initialize(m_engine, part, null, null);
 
             osslApi.osOwnerSaveAppearance(firstAppearanceNcName);
 
@@ -286,10 +285,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             m_scene.AddSceneObject(otherSo);
 
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, part, null);
+            osslApi.Initialize(m_engine, part, null, null);
 
             OSSL_Api otherOsslApi = new OSSL_Api();
-            otherOsslApi.Initialize(m_engine, otherPart, null);
+            otherOsslApi.Initialize(m_engine, otherPart, null, null);
 
             string notecardName = "appearanceNc";
             osslApi.osOwnerSaveAppearance(notecardName);
@@ -333,7 +332,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Tests
             m_scene.AddSceneObject(so);
 
             OSSL_Api osslApi = new OSSL_Api();
-            osslApi.Initialize(m_engine, part, null);
+            osslApi.Initialize(m_engine, part, null, null);
 
             string notecardName = "appearanceNc";
             osslApi.osOwnerSaveAppearance(notecardName);
diff --git a/OpenSim/Region/ScriptEngine/XEngine/Api/Runtime/XEngineScriptBase.cs b/OpenSim/Region/ScriptEngine/XEngine/Api/Runtime/XEngineScriptBase.cs
new file mode 100644
index 0000000..f4211c8
--- /dev/null
+++ b/OpenSim/Region/ScriptEngine/XEngine/Api/Runtime/XEngineScriptBase.cs
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Runtime.Remoting;
+using System.Runtime.Remoting.Lifetime;
+using System.Security.Permissions;
+using System.Threading;
+using System.Reflection;
+using System.Collections;
+using System.Collections.Generic;
+using OpenSim.Region.ScriptEngine.Interfaces;
+using OpenSim.Region.ScriptEngine.Shared;
+using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
+
+namespace OpenSim.Region.ScriptEngine.XEngine.ScriptBase
+{
+    public class XEngineScriptBase : ScriptBaseClass
+    {
+        /// <summary>
+        /// Used for script sleeps when we are using co-operative script termination.
+        /// </summary>
+        /// <remarks>null if co-operative script termination is not active</remarks>  
+        WaitHandle m_coopSleepHandle;
+
+        public XEngineScriptBase(WaitHandle coopSleepHandle) : base()
+        {
+            m_coopSleepHandle = coopSleepHandle;
+        }
+
+        public void opensim_reserved_CheckForCoopTermination()
+        {
+            if (m_coopSleepHandle != null && m_coopSleepHandle.WaitOne(0))
+                throw new ScriptCoopStopException();
+        }
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Region/ScriptEngine/XEngine/EventManager.cs b/OpenSim/Region/ScriptEngine/XEngine/EventManager.cs
index 9405075..0ff2da3 100644
--- a/OpenSim/Region/ScriptEngine/XEngine/EventManager.cs
+++ b/OpenSim/Region/ScriptEngine/XEngine/EventManager.cs
@@ -52,7 +52,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
         {
             myScriptEngine = _ScriptEngine;
 
-            m_log.Info("[XEngine] Hooking up to server events");
+//            m_log.Info("[XEngine] Hooking up to server events");
             myScriptEngine.World.EventManager.OnAttach += attach;
             myScriptEngine.World.EventManager.OnObjectGrab += touch_start;
             myScriptEngine.World.EventManager.OnObjectGrabbing += touch;
@@ -62,6 +62,8 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             myScriptEngine.World.EventManager.OnScriptNotAtTargetEvent += not_at_target;
             myScriptEngine.World.EventManager.OnScriptAtRotTargetEvent += at_rot_target;
             myScriptEngine.World.EventManager.OnScriptNotAtRotTargetEvent += not_at_rot_target;
+            myScriptEngine.World.EventManager.OnScriptMovingStartEvent += moving_start;
+            myScriptEngine.World.EventManager.OnScriptMovingEndEvent += moving_end;
             myScriptEngine.World.EventManager.OnScriptControlEvent += control;
             myScriptEngine.World.EventManager.OnScriptColliderStart += collision_start;
             myScriptEngine.World.EventManager.OnScriptColliding += collision;
@@ -69,7 +71,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             myScriptEngine.World.EventManager.OnScriptLandColliderStart += land_collision_start;
             myScriptEngine.World.EventManager.OnScriptLandColliding += land_collision;
             myScriptEngine.World.EventManager.OnScriptLandColliderEnd += land_collision_end;
-            IMoneyModule money=myScriptEngine.World.RequestModuleInterface<IMoneyModule>();
+            IMoneyModule money = myScriptEngine.World.RequestModuleInterface<IMoneyModule>();
             if (money != null)
             {
                 money.OnObjectPaid+=HandleObjectPaid;
@@ -419,14 +421,14 @@ namespace OpenSim.Region.ScriptEngine.XEngine
         // dataserver: not handled here
         // link_message: not handled here
 
-        public void moving_start(uint localID, UUID itemID)
+        public void moving_start(uint localID)
         {
             myScriptEngine.PostObjectEvent(localID, new EventParams(
                     "moving_start",new object[0],
                     new DetectParams[0]));
         }
 
-        public void moving_end(uint localID, UUID itemID)
+        public void moving_end(uint localID)
         {
             myScriptEngine.PostObjectEvent(localID, new EventParams(
                     "moving_end",new object[0],
diff --git a/OpenSim/Region/ScriptEngine/XEngine/Properties/AssemblyInfo.cs b/OpenSim/Region/ScriptEngine/XEngine/Properties/AssemblyInfo.cs
index bd26a8b..f0640da 100644
--- a/OpenSim/Region/ScriptEngine/XEngine/Properties/AssemblyInfo.cs
+++ b/OpenSim/Region/ScriptEngine/XEngine/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("0.7.5.*")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("0.7.6.*")]
+
diff --git a/OpenSim/Region/ScriptEngine/XEngine/ScriptEngineConsoleCommands.cs b/OpenSim/Region/ScriptEngine/XEngine/ScriptEngineConsoleCommands.cs
new file mode 100644
index 0000000..efb854d
--- /dev/null
+++ b/OpenSim/Region/ScriptEngine/XEngine/ScriptEngineConsoleCommands.cs
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using OpenSim.Framework;
+using OpenSim.Framework.Console;
+using OpenSim.Region.ScriptEngine.Interfaces;
+using OpenSim.Region.ScriptEngine.Shared.Api;
+using OpenSim.Region.ScriptEngine.Shared.Api.Plugins;
+
+namespace OpenSim.Region.ScriptEngine.XEngine
+{
+    public class ScriptEngineConsoleCommands
+    {
+        IScriptEngine m_engine;
+
+        public ScriptEngineConsoleCommands(IScriptEngine engine)
+        {
+            m_engine = engine;
+        }
+
+        public void RegisterCommands()
+        {
+            MainConsole.Instance.Commands.AddCommand(
+                "Scripts", false, "show script sensors", "show script sensors", "Show script sensors information",
+                HandleShowSensors);
+
+            MainConsole.Instance.Commands.AddCommand(
+                "Scripts", false, "show script timers", "show script timers", "Show script sensors information",
+                HandleShowTimers);
+        }
+
+        private bool IsSceneSelected()
+        {
+            return MainConsole.Instance.ConsoleScene == null || MainConsole.Instance.ConsoleScene == m_engine.World;
+        }
+
+        private void HandleShowSensors(string module, string[] cmdparams)
+        {
+            if (!IsSceneSelected())
+                return;
+
+            SensorRepeat sr = AsyncCommandManager.GetSensorRepeatPlugin(m_engine);
+
+            if (sr == null)
+            {
+                MainConsole.Instance.Output("Plugin not yet initialized");
+                return;
+            }
+
+            List<SensorRepeat.SensorInfo> sensorInfo = sr.GetSensorInfo();
+
+            ConsoleDisplayTable cdt = new ConsoleDisplayTable();
+            cdt.AddColumn("Part name", 40);
+            cdt.AddColumn("Script item ID", 36);
+            cdt.AddColumn("Type", 4);
+            cdt.AddColumn("Interval", 8);
+            cdt.AddColumn("Range", 8);
+            cdt.AddColumn("Arc", 8);
+
+            foreach (SensorRepeat.SensorInfo s in sensorInfo)
+            {
+                cdt.AddRow(s.host.Name, s.itemID, s.type, s.interval, s.range, s.arc);
+            }
+
+            MainConsole.Instance.Output(cdt.ToString());
+            MainConsole.Instance.OutputFormat("Total: {0}", sensorInfo.Count);
+        }
+
+        private void HandleShowTimers(string module, string[] cmdparams)
+        {
+            if (!IsSceneSelected())
+                return;
+
+            Timer timerPlugin = AsyncCommandManager.GetTimerPlugin(m_engine);
+
+            if (timerPlugin == null)
+            {
+                MainConsole.Instance.Output("Plugin not yet initialized");
+                return;
+            }
+
+            List<Timer.TimerInfo> timersInfo = timerPlugin.GetTimersInfo();
+
+            ConsoleDisplayTable cdt = new ConsoleDisplayTable();
+            cdt.AddColumn("Part local ID", 13);
+            cdt.AddColumn("Script item ID", 36);
+            cdt.AddColumn("Interval", 10);
+            cdt.AddColumn("Next", 8);
+
+            foreach (Timer.TimerInfo t in timersInfo)
+            {
+                // Convert from 100 ns ticks back to seconds
+                cdt.AddRow(t.localID, t.itemID, (double)t.interval / 10000000, t.next);
+            }
+
+            MainConsole.Instance.Output(cdt.ToString());
+            MainConsole.Instance.OutputFormat("Total: {0}", timersInfo.Count);
+        }
+    }
+}
\ No newline at end of file
diff --git a/OpenSim/Region/ScriptEngine/XEngine/Tests/XEngineTest.cs b/OpenSim/Region/ScriptEngine/XEngine/Tests/XEngineBasicTests.cs
index f331658..5abfe9a 100644
--- a/OpenSim/Region/ScriptEngine/XEngine/Tests/XEngineTest.cs
+++ b/OpenSim/Region/ScriptEngine/XEngine/Tests/XEngineBasicTests.cs
@@ -44,7 +44,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine.Tests
     /// XEngine tests.
     /// </summary>
     [TestFixture]
-    public class XEngineTest
+    public class XEngineTest : OpenSimTestCase
     {
         private TestScene m_scene;
         private XEngine m_xEngine;
diff --git a/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs b/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
index 9f05666..17243ab 100644
--- a/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
+++ b/OpenSim/Region/ScriptEngine/XEngine/XEngine.cs
@@ -31,6 +31,7 @@ using System.Collections.Generic;
 using System.Diagnostics; //for [DebuggerNonUserCode]
 using System.Globalization;
 using System.IO;
+using System.Linq;
 using System.Reflection;
 using System.Security;
 using System.Security.Policy;
@@ -46,13 +47,14 @@ using OpenSim.Framework;
 using OpenSim.Framework.Console;
 using OpenSim.Region.Framework.Scenes;
 using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.ScriptEngine.Interfaces;
 using OpenSim.Region.ScriptEngine.Shared;
-using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
 using OpenSim.Region.ScriptEngine.Shared.CodeTools;
 using OpenSim.Region.ScriptEngine.Shared.Instance;
 using OpenSim.Region.ScriptEngine.Shared.Api;
 using OpenSim.Region.ScriptEngine.Shared.Api.Plugins;
-using OpenSim.Region.ScriptEngine.Interfaces;
+using OpenSim.Region.ScriptEngine.Shared.ScriptBase;
+using OpenSim.Region.ScriptEngine.XEngine.ScriptBase;
 using Timer = OpenSim.Region.ScriptEngine.Shared.Api.Plugins.Timer;
 
 using ScriptCompileQueue = OpenSim.Framework.LocklessQueue<object[]>;
@@ -107,6 +109,24 @@ namespace OpenSim.Region.ScriptEngine.XEngine
         private IXmlRpcRouter m_XmlRpcRouter;
         private int m_EventLimit;
         private bool m_KillTimedOutScripts;
+
+        /// <summary>
+        /// Number of milliseconds we will wait for a script event to complete on script stop before we forcibly abort
+        /// its thread.
+        /// </summary>
+        /// <remarks>
+        /// It appears that if a script thread is aborted whilst it is holding ReaderWriterLockSlim (possibly the write
+        /// lock) then the lock is not properly released.  This causes mono 2.6, 2.10 and possibly
+        /// later to crash, sometimes with symptoms such as a leap to 100% script usage and a vm thead dump showing
+        /// all threads waiting on release of ReaderWriterLockSlim write thread which none of the threads listed 
+        /// actually hold.
+        /// 
+        /// Pausing for event completion reduces the risk of this happening.  However, it may be that aborting threads
+        /// is not a mono issue per se but rather a risky activity in itself in an AppDomain that is not immediately
+        /// shutting down.
+        /// </remarks>
+        private int m_WaitForEventCompletionOnScriptStop = 1000;
+
         private string m_ScriptEnginesPath = null;
 
         private ExpiringCache<UUID, bool> m_runFlags = new ExpiringCache<UUID, bool>();
@@ -218,11 +238,21 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             }
         }
 
+        private ScriptEngineConsoleCommands m_consoleCommands;
+
         public string ScriptEngineName
         {
             get { return "XEngine"; }
         }
 
+        public string ScriptClassName { get; private set; }
+
+        public string ScriptBaseClassName { get; private set; }
+
+        public ParameterInfo[] ScriptBaseClassParameters { get; private set; }
+
+        public string[] ScriptReferencedAssemblies { get; private set; }
+
         public Scene World
         {
             get { return m_Scene; }
@@ -277,21 +307,35 @@ namespace OpenSim.Region.ScriptEngine.XEngine
 
             m_ScriptConfig = configSource.Configs["XEngine"];
             m_ConfigSource = configSource;
+
+            string rawScriptStopStrategy = m_ScriptConfig.GetString("ScriptStopStrategy", "abort");
+
+            m_log.InfoFormat("[XEngine]: Script stop strategy is {0}", rawScriptStopStrategy);
+
+            if (rawScriptStopStrategy == "co-op")
+            {
+                ScriptClassName = "XEngineScript";
+                ScriptBaseClassName = typeof(XEngineScriptBase).FullName;
+                ScriptBaseClassParameters = typeof(XEngineScriptBase).GetConstructor(new Type[] { typeof(WaitHandle) }).GetParameters();
+                ScriptReferencedAssemblies = new string[] { Path.GetFileName(typeof(XEngineScriptBase).Assembly.Location) };
+            }
+            else
+            {
+                ScriptClassName = "Script";
+                ScriptBaseClassName = typeof(ScriptBaseClass).FullName;
+            }
+
+//            Console.WriteLine("ASSEMBLY NAME: {0}", ScriptReferencedAssemblies[0]);
         }
 
         public void AddRegion(Scene scene)
         {
             if (m_ScriptConfig == null)
                 return;
+
             m_ScriptFailCount = 0;
             m_ScriptErrorMessage = String.Empty;
 
-            if (m_ScriptConfig == null)
-            {
-//                m_log.ErrorFormat("[XEngine] No script configuration found. Scripts disabled");
-                return;
-            }
-
             m_Enabled = m_ScriptConfig.GetBoolean("Enabled", true);
 
             if (!m_Enabled)
@@ -316,6 +360,9 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             m_EventLimit = m_ScriptConfig.GetInt("EventLimit", 30);
             m_KillTimedOutScripts = m_ScriptConfig.GetBoolean("KillTimedOutScripts", false);
             m_SaveTime = m_ScriptConfig.GetInt("SaveInterval", 120) * 1000;
+            m_WaitForEventCompletionOnScriptStop 
+                = m_ScriptConfig.GetInt("WaitForEventCompletionOnScriptStop", m_WaitForEventCompletionOnScriptStop);
+
             m_ScriptEnginesPath = m_ScriptConfig.GetString("ScriptEnginesPath", "ScriptEngines");
 
             m_Prio = ThreadPriority.BelowNormal;
@@ -364,48 +411,59 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                 OnObjectRemoved += m_XmlRpcRouter.ObjectRemoved;
             }
 
+            m_consoleCommands = new ScriptEngineConsoleCommands(this);
+            m_consoleCommands.RegisterCommands();
+
             MainConsole.Instance.Commands.AddCommand(
                 "Scripts", false, "xengine status", "xengine status", "Show status information",
                 "Show status information on the script engine.",
                 HandleShowStatus);
 
             MainConsole.Instance.Commands.AddCommand(
-                "Scripts", false, "scripts show", "scripts show [<script-item-uuid>]", "Show script information",
-                "Show information on all scripts known to the script engine."
-                    + "If a <script-item-uuid> is given then only information on that script will be shown.",
+                "Scripts", false, "scripts show", "scripts show [<script-item-uuid>+]", "Show script information",
+                "Show information on all scripts known to the script engine.\n"
+                    + "If one or more <script-item-uuid>s are given then only information on that script will be shown.",
                 HandleShowScripts);
 
             MainConsole.Instance.Commands.AddCommand(
-                "Scripts", false, "show scripts", "show scripts [<script-item-uuid>]", "Show script information",
+                "Scripts", false, "show scripts", "show scripts [<script-item-uuid>+]", "Show script information",
                 "Synonym for scripts show command", HandleShowScripts);
 
             MainConsole.Instance.Commands.AddCommand(
-                "Scripts", false, "scripts suspend", "scripts suspend [<script-item-uuid>]", "Suspends all running scripts",
+                "Scripts", false, "scripts suspend", "scripts suspend [<script-item-uuid>+]", "Suspends all running scripts",
                 "Suspends all currently running scripts.  This only suspends event delivery, it will not suspend a"
                     + " script that is currently processing an event.\n"
                     + "Suspended scripts will continue to accumulate events but won't process them.\n"
-                    + "If a <script-item-uuid> is given then only that script will be suspended.  Otherwise, all suitable scripts are suspended.",
+                    + "If one or more <script-item-uuid>s are given then only that script will be suspended.  Otherwise, all suitable scripts are suspended.",
                  (module, cmdparams) => HandleScriptsAction(cmdparams, HandleSuspendScript));
 
             MainConsole.Instance.Commands.AddCommand(
-                "Scripts", false, "scripts resume", "scripts resume [<script-item-uuid>]", "Resumes all suspended scripts",
+                "Scripts", false, "scripts resume", "scripts resume [<script-item-uuid>+]", "Resumes all suspended scripts",
                 "Resumes all currently suspended scripts.\n"
-                    + "Resumed scripts will process all events accumulated whilst suspended."
-                    + "If a <script-item-uuid> is given then only that script will be resumed.  Otherwise, all suitable scripts are resumed.",
+                    + "Resumed scripts will process all events accumulated whilst suspended.\n"
+                    + "If one or more <script-item-uuid>s are given then only that script will be resumed.  Otherwise, all suitable scripts are resumed.",
                 (module, cmdparams) => HandleScriptsAction(cmdparams, HandleResumeScript));
 
             MainConsole.Instance.Commands.AddCommand(
-                "Scripts", false, "scripts stop", "scripts stop [<script-item-uuid>]", "Stops all running scripts",
-                "Stops all running scripts."
-                    + "If a <script-item-uuid> is given then only that script will be stopped.  Otherwise, all suitable scripts are stopped.",
+                "Scripts", false, "scripts stop", "scripts stop [<script-item-uuid>+]", "Stops all running scripts",
+                "Stops all running scripts.\n"
+                    + "If one or more <script-item-uuid>s are given then only that script will be stopped.  Otherwise, all suitable scripts are stopped.",
                 (module, cmdparams) => HandleScriptsAction(cmdparams, HandleStopScript));
 
             MainConsole.Instance.Commands.AddCommand(
-                "Scripts", false, "scripts start", "scripts start [<script-item-uuid>]", "Starts all stopped scripts",
-                "Starts all stopped scripts."
-                    + "If a <script-item-uuid> is given then only that script will be started.  Otherwise, all suitable scripts are started.",
+                "Scripts", false, "scripts start", "scripts start [<script-item-uuid>+]", "Starts all stopped scripts",
+                "Starts all stopped scripts.\n"
+                    + "If one or more <script-item-uuid>s are given then only that script will be started.  Otherwise, all suitable scripts are started.",
                 (module, cmdparams) => HandleScriptsAction(cmdparams, HandleStartScript));
 
+            MainConsole.Instance.Commands.AddCommand(
+                "Scripts", false, "debug scripts log", "debug scripts log <item-id> <log-level>", "Extra debug logging for a script",
+                "Activates or deactivates extra debug logging for the given script.\n"
+                    + "Level == 0, deactivate extra debug logging.\n"
+                    + "Level >= 1, log state changes.\n"
+                    + "Level >= 2, log event invocations.\n",
+                HandleDebugScriptLogCommand);
+
 //            MainConsole.Instance.Commands.AddCommand(
 //                "Debug", false, "debug xengine", "debug xengine [<level>]",
 //                "Turn on detailed xengine debugging.",
@@ -414,6 +472,41 @@ namespace OpenSim.Region.ScriptEngine.XEngine
 //                HandleDebugLevelCommand);
         }
 
+        private void HandleDebugScriptLogCommand(string module, string[] args)
+        {
+            if (!(MainConsole.Instance.ConsoleScene == null || MainConsole.Instance.ConsoleScene == m_Scene))
+                return;
+
+            if (args.Length != 5)
+            {
+                MainConsole.Instance.Output("Usage: debug script log <item-id> <log-level>");
+                return;
+            }
+
+            UUID itemId;
+
+            if (!ConsoleUtil.TryParseConsoleUuid(MainConsole.Instance, args[3], out itemId))
+                return;
+
+            int newLevel;
+
+            if (!ConsoleUtil.TryParseConsoleInt(MainConsole.Instance, args[4], out newLevel))
+                return;
+
+            IScriptInstance si;
+
+            lock (m_Scripts)
+            {
+                // XXX: We can't give the user feedback on a bad item id because this may apply to a different script
+                // engine
+                if (!m_Scripts.TryGetValue(itemId, out si))
+                    return;
+            }
+
+            si.DebugLevel = newLevel;
+            MainConsole.Instance.OutputFormat("Set debug level of {0} {1} to {2}", si.ScriptName, si.ItemID, newLevel);
+        }
+
         /// <summary>
         /// Change debug level
         /// </summary>
@@ -445,9 +538,21 @@ namespace OpenSim.Region.ScriptEngine.XEngine
         /// </summary>
         /// <param name="cmdparams"></param>
         /// <param name="instance"></param>
-        /// <returns>true if we're okay to proceed, false if not.</returns>
+        /// <param name="comparer">Basis on which to sort output.  Can be null if no sort needs to take place</param>
         private void HandleScriptsAction(string[] cmdparams, Action<IScriptInstance> action)
         {
+            HandleScriptsAction<object>(cmdparams, action, null);
+        }
+
+        /// <summary>
+        /// Parse the raw item id into a script instance from the command params if it's present.
+        /// </summary>
+        /// <param name="cmdparams"></param>
+        /// <param name="instance"></param>
+        /// <param name="keySelector">Basis on which to sort output.  Can be null if no sort needs to take place</param>
+        private void HandleScriptsAction<TKey>(
+            string[] cmdparams, Action<IScriptInstance> action, Func<IScriptInstance, TKey> keySelector)
+        {
             if (!(MainConsole.Instance.ConsoleScene == null || MainConsole.Instance.ConsoleScene == m_Scene))
                 return;
 
@@ -458,35 +563,42 @@ namespace OpenSim.Region.ScriptEngine.XEngine
     
                 if (cmdparams.Length == 2)
                 {
-                    foreach (IScriptInstance instance in m_Scripts.Values)
+                    IEnumerable<IScriptInstance> scripts = m_Scripts.Values;
+
+                    if (keySelector != null)
+                        scripts = scripts.OrderBy<IScriptInstance, TKey>(keySelector);
+
+                    foreach (IScriptInstance instance in scripts)
                         action(instance);
 
                     return;
                 }
     
-                rawItemId = cmdparams[2];
-    
-                if (!UUID.TryParse(rawItemId, out itemId))
-                {
-                    MainConsole.Instance.OutputFormat("Error - {0} is not a valid UUID", rawItemId);
-                    return;
-                }
-    
-                if (itemId != UUID.Zero)
+                for (int i = 2; i < cmdparams.Length; i++)
                 {
-                    IScriptInstance instance = GetInstance(itemId);
-                    if (instance == null)
+                    rawItemId = cmdparams[i];
+        
+                    if (!UUID.TryParse(rawItemId, out itemId))
                     {
-                        // Commented out for now since this will cause false reports on simulators with more than
-                        // one scene where the current command line set region is 'root' (which causes commands to
-                        // go to both regions... (sigh)
-//                        MainConsole.Instance.OutputFormat("Error - No item found with id {0}", itemId);
-                        return;
+                        MainConsole.Instance.OutputFormat("ERROR: {0} is not a valid UUID", rawItemId);
+                        continue;
                     }
-                    else
+        
+                    if (itemId != UUID.Zero)
                     {
-                        action(instance);
-                        return;
+                        IScriptInstance instance = GetInstance(itemId);
+                        if (instance == null)
+                        {
+                            // Commented out for now since this will cause false reports on simulators with more than
+                            // one scene where the current command line set region is 'root' (which causes commands to
+                            // go to both regions... (sigh)
+    //                        MainConsole.Instance.OutputFormat("Error - No item found with id {0}", itemId);
+                            continue;
+                        }
+                        else
+                        {
+                            action(instance);
+                        }
                     }
                 }
             }
@@ -505,9 +617,20 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             StringBuilder sb = new StringBuilder();
             sb.AppendFormat("Status of XEngine instance for {0}\n", m_Scene.RegionInfo.RegionName);
 
+            long scriptsLoaded, eventsQueued = 0, eventsProcessed = 0;
+
             lock (m_Scripts)
-                sb.AppendFormat("Scripts loaded             : {0}\n", m_Scripts.Count);
+            {
+                scriptsLoaded = m_Scripts.Count;
 
+                foreach (IScriptInstance si in m_Scripts.Values)
+                {
+                    eventsQueued += si.EventsQueued;
+                    eventsProcessed += si.EventsProcessed;
+                }
+            }
+
+            sb.AppendFormat("Scripts loaded             : {0}\n", scriptsLoaded);
             sb.AppendFormat("Unique scripts             : {0}\n", m_uniqueScripts.Count);
             sb.AppendFormat("Scripts waiting for load   : {0}\n", m_CompileQueue.Count);
             sb.AppendFormat("Max threads                : {0}\n", m_ThreadPool.MaxThreads);
@@ -516,6 +639,8 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             sb.AppendFormat("In use threads             : {0}\n", m_ThreadPool.InUseThreads);
             sb.AppendFormat("Work items waiting         : {0}\n", m_ThreadPool.WaitingCallbacks);
 //            sb.AppendFormat("Assemblies loaded          : {0}\n", m_Assemblies.Count);
+            sb.AppendFormat("Events queued              : {0}\n", eventsQueued);
+            sb.AppendFormat("Events processed           : {0}\n", eventsProcessed);
 
             SensorRepeat sr = AsyncCommandManager.GetSensorRepeatPlugin(this);
             sb.AppendFormat("Sensors                    : {0}\n", sr != null ? sr.SensorsCount : 0);
@@ -546,7 +671,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                 }
             }
 
-            HandleScriptsAction(cmdparams, HandleShowScript);
+            HandleScriptsAction<long>(cmdparams, HandleShowScript, si => si.EventsProcessed);
         }
 
         private void HandleShowScript(IScriptInstance instance)
@@ -572,15 +697,13 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             }
 
             StringBuilder sb = new StringBuilder();
-            Queue eq = instance.EventQueue;
 
             sb.AppendFormat("Script name         : {0}\n", instance.ScriptName);
             sb.AppendFormat("Status              : {0}\n", status);
-
-            lock (eq)
-                sb.AppendFormat("Queued events       : {0}\n", eq.Count);
-
+            sb.AppendFormat("Queued events       : {0}\n", instance.EventsQueued);
+            sb.AppendFormat("Processed events    : {0}\n", instance.EventsProcessed);
             sb.AppendFormat("Item UUID           : {0}\n", instance.ItemID);
+            sb.AppendFormat("Asset UUID          : {0}\n", instance.AssetID);
             sb.AppendFormat("Containing part name: {0}\n", instance.PrimName);
             sb.AppendFormat("Containing part UUID: {0}\n", instance.ObjectID);
             sb.AppendFormat("Position            : {0}\n", sop.AbsolutePosition);
@@ -1079,7 +1202,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             }
 
             m_log.DebugFormat(
-                "[XEngine] Loading script {0}.{1}, item UUID {2}, prim UUID {3} @ {4}.{5}",
+                "[XEngine]: Loading script {0}.{1}, item UUID {2}, prim UUID {3} @ {4}.{5}",
                 part.ParentGroup.RootPart.Name, item.Name, itemID, part.UUID,
                 part.ParentGroup.RootPart.AbsolutePosition, part.ParentGroup.Scene.RegionInfo.RegionName);
 
@@ -1089,8 +1212,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
 
             string assembly = "";
 
-            CultureInfo USCulture = new CultureInfo("en-US");
-            Thread.CurrentThread.CurrentCulture = USCulture;
+            Culture.SetCurrentCulture();
 
             Dictionary<KeyValuePair<int, int>, KeyValuePair<int, int>> linemap;
 
@@ -1101,6 +1223,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                     lock (m_AddingAssemblies)
                     {
                         m_Compiler.PerformScriptCompile(script, assetID.ToString(), item.OwnerID, out assembly, out linemap);
+                        
                         if (!m_AddingAssemblies.ContainsKey(assembly)) {
                             m_AddingAssemblies[assembly] = 1;
                         } else {
@@ -1150,7 +1273,9 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                 }
                 catch (Exception e)
                 {
-//                    m_log.ErrorFormat("[XEngine]: Exception when rezzing script {0}{1}", e.Message, e.StackTrace);
+//                    m_log.ErrorFormat(
+//                        "[XEngine]: Exception when rezzing script with item ID {0}, {1}{2}", 
+//                        itemID, e.Message, e.StackTrace);
 
     //                try
     //                {
@@ -1229,13 +1354,8 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                             sandbox = AppDomain.CurrentDomain;
                         }
 
-                        //PolicyLevel sandboxPolicy = PolicyLevel.CreateAppDomainLevel();
-                        //AllMembershipCondition sandboxMembershipCondition = new AllMembershipCondition();
-                        //PermissionSet sandboxPermissionSet = sandboxPolicy.GetNamedPermissionSet("Internet");
-                        //PolicyStatement sandboxPolicyStatement = new PolicyStatement(sandboxPermissionSet);
-                        //CodeGroup sandboxCodeGroup = new UnionCodeGroup(sandboxMembershipCondition, sandboxPolicyStatement);
-                        //sandboxPolicy.RootCodeGroup = sandboxCodeGroup;
-                        //sandbox.SetAppDomainPolicy(sandboxPolicy);
+                    if (!instance.Load(m_AppDomains[appDomain], assembly, stateSource))
+                        return false;
 
                         m_AppDomains[appDomain] = sandbox;
 
@@ -1256,12 +1376,11 @@ namespace OpenSim.Region.ScriptEngine.XEngine
                 m_DomainScripts[appDomain].Add(itemID);
 
                 instance = new ScriptInstance(this, part,
-                                              itemID, assetID, assembly,
-                                              m_AppDomains[appDomain],
-                                              part.ParentGroup.RootPart.Name,
-                                              item.Name, startParam, postOnRez,
-                                              stateSource, m_MaxScriptQueue);
+                                              item,
+                                              startParam, postOnRez,
+                                              m_MaxScriptQueue);
 
+                instance.Load(m_AppDomains[appDomain], assembly, stateSource);
 //                m_log.DebugFormat(
 //                        "[XEngine] Loaded script {0}.{1}, script UUID {2}, prim UUID {3} @ {4}.{5}",
 //                        part.ParentGroup.RootPart.Name, item.Name, assetID, part.UUID, 
@@ -1347,9 +1466,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             lockScriptsForWrite(false);
             instance.ClearQueue();
 
-            // Give the script some time to finish processing its last event.  Simply aborting the script thread can
-            // cause issues on mono 2.6, 2.10 and possibly later where locks are not released properly on abort.
-            instance.Stop(1000);
+            instance.Stop(m_WaitForEventCompletionOnScriptStop);
 
 //                bool objectRemoved = false;
 
@@ -1477,7 +1594,8 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             m_MaxScriptQueue = maxScriptQueue;
 
             STPStartInfo startInfo = new STPStartInfo();
-            startInfo.IdleTimeout = idleTimeout*1000; // convert to seconds as stated in .ini
+            startInfo.ThreadPoolName = "XEngine";
+            startInfo.IdleTimeout = idleTimeout * 1000; // convert to seconds as stated in .ini
             startInfo.MaxWorkerThreads = maxThreads;
             startInfo.MinWorkerThreads = minThreads;
             startInfo.ThreadPriority = threadPriority;;
@@ -1504,8 +1622,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
         /// <returns></returns>
         private object ProcessEventHandler(object parms)
         {
-            CultureInfo USCulture = new CultureInfo("en-US");
-            Thread.CurrentThread.CurrentCulture = USCulture;
+            Culture.SetCurrentCulture();
 
             IScriptInstance instance = (ScriptInstance) parms;
             
@@ -1693,7 +1810,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine
         {
             IScriptInstance instance = GetInstance(itemID);
             if (instance != null)
-                instance.ResetScript();
+                instance.ResetScript(m_WaitForEventCompletionOnScriptStop);
         }
 
         public void StartScript(UUID itemID)
@@ -1708,14 +1825,14 @@ namespace OpenSim.Region.ScriptEngine.XEngine
         public void StopScript(UUID itemID)
         {
             IScriptInstance instance = GetInstance(itemID);
+
             if (instance != null)
             {
-                // Give the script some time to finish processing its last event.  Simply aborting the script thread can
-                // cause issues on mono 2.6, 2.10 and possibly later where locks are not released properly on abort.
-                instance.Stop(1000);
+                instance.Stop(m_WaitForEventCompletionOnScriptStop);
             }
             else
             {
+//                m_log.DebugFormat("[XENGINE]: Could not find script with ID {0} to stop in {1}", itemID, World.Name);
                 m_runFlags.AddOrUpdate(itemID, false, 240);
             }
         }
diff --git a/OpenSim/Region/ScriptEngine/XEngine/XWorkItem.cs b/OpenSim/Region/ScriptEngine/XEngine/XWorkItem.cs
index 2ac5c31..8dd7677 100644
--- a/OpenSim/Region/ScriptEngine/XEngine/XWorkItem.cs
+++ b/OpenSim/Region/ScriptEngine/XEngine/XWorkItem.cs
@@ -57,8 +57,12 @@ namespace OpenSim.Region.ScriptEngine.XEngine
             wr.Abort();
         }
 
-        public bool Wait(TimeSpan t)
+        public bool Wait(int t)
         {
+            // We use the integer version of WaitAll because the current version of SmartThreadPool has a bug with the
+            // TimeSpan version.  The number of milliseconds in TimeSpan is an int64 so when STP casts it down to an 
+            // int (32-bit) we can end up with bad values.  This occurs on Windows though curious not on Mono 2.10.8
+            // (or very likely other versions of Mono at least up until 3.0.3).
             return SmartThreadPool.WaitAll(new IWorkItemResult[] {wr}, t, false);
         }
     }