9 files changed, 287 insertions, 163 deletions

diff --git a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
index 63dd550..c2ec5d0 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.Inventory.cs
@@ -57,11 +57,11 @@ namespace OpenSim.Region.Framework.Scenes
         protected AsyncInventorySender m_asyncInventorySender;
 
         /// <summary>
-        /// Start all the scripts in the scene which should be started.
+        /// Creates all the scripts in the scene which should be started.
         /// </summary>
         public void CreateScriptInstances()
         {
-            m_log.Info("[PRIM INVENTORY]: Starting scripts in scene");
+            m_log.Info("[PRIM INVENTORY]: Creating scripts in scene");
 
             EntityBase[] entities = Entities.GetEntities();
             foreach (EntityBase group in entities)
@@ -74,6 +74,26 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
+        /// <summary>
+        /// Lets the script engines start processing scripts.
+        /// </summary>
+        public void StartScripts()
+        {
+            m_log.Info("[PRIM INVENTORY]: Starting scripts in scene");
+
+            IScriptModule[] engines = RequestModuleInterfaces<IScriptModule>();
+            if (engines != null)
+            {
+                foreach (IScriptModule engine in engines)
+                {
+                    if (engine != null)
+                    {
+                        engine.StartProcessing();
+                    }
+                }
+            }
+        }
+
         public void AddUploadedInventoryItem(UUID agentID, InventoryItemBase item)
         {
             IMoneyModule money = RequestModuleInterface<IMoneyModule>();
diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index a661ab8..c5bb2b2 100644
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -610,9 +610,42 @@ namespace OpenSim.Region.Framework.Scenes
             #region Region Settings
 
             // Load region settings
-            m_regInfo.WindlightSettings = SimulationDataService.LoadRegionWindlightSettings(m_regInfo.RegionID);
+            // LoadRegionSettings creates new region settings in persistence if they don't already exist for this region.
+            // However, in this case, the default textures are not set in memory properly, so we need to do it here and
+            // resave.
+            // FIXME: It shouldn't be up to the database plugins to create this data - we should do it when a new
+            // region is set up and avoid these gyrations.
+            RegionSettings rs = simDataService.LoadRegionSettings(m_regInfo.RegionID);
+            bool updatedTerrainTextures = false;
+            if (rs.TerrainTexture1 == UUID.Zero)
+            {
+                rs.TerrainTexture1 = RegionSettings.DEFAULT_TERRAIN_TEXTURE_1;
+                updatedTerrainTextures = true;
+            }
+
+            if (rs.TerrainTexture2 == UUID.Zero)
+            {
+                rs.TerrainTexture2 = RegionSettings.DEFAULT_TERRAIN_TEXTURE_2;
+                updatedTerrainTextures = true;
+            }
+
+            if (rs.TerrainTexture3 == UUID.Zero)
+            {
+                rs.TerrainTexture3 = RegionSettings.DEFAULT_TERRAIN_TEXTURE_3;
+                updatedTerrainTextures = true;
+            }
+
+            if (rs.TerrainTexture4 == UUID.Zero)
+            {
+                rs.TerrainTexture4 = RegionSettings.DEFAULT_TERRAIN_TEXTURE_4;
+                updatedTerrainTextures = true;
+            }
+
+            if (updatedTerrainTextures)
+                rs.Save();
+
+            m_regInfo.RegionSettings = rs;
 
-            m_regInfo.RegionSettings = simDataService.LoadRegionSettings(m_regInfo.RegionID);
             if (estateDataService != null)
                 m_regInfo.EstateSettings = estateDataService.LoadEstateSettings(m_regInfo.RegionID, false);
 
@@ -645,7 +678,7 @@ namespace OpenSim.Region.Framework.Scenes
             EventManager.OnLandObjectRemoved +=
                 new EventManager.LandObjectRemoved(simDataService.RemoveLandObject);
 
-            m_sceneGraph = new SceneGraph(this, m_regInfo);
+            m_sceneGraph = new SceneGraph(this);
 
             // If the scene graph has an Unrecoverable error, restart this sim.
             // Currently the only thing that causes it to happen is two kinds of specific
@@ -1575,7 +1608,9 @@ namespace OpenSim.Region.Framework.Scenes
                     msg.ParentEstateID = RegionInfo.EstateSettings.ParentEstateID;
                     msg.Position = Vector3.Zero;
                     msg.RegionID = RegionInfo.RegionID.Guid;
-                    msg.binaryBucket = new byte[0];
+
+                    // We must fill in a null-terminated 'empty' string here since bytes[0] will crash viewer 3.
+                    msg.binaryBucket = Util.StringToBytes256("\0");
                     if (ret.Value.count > 1)
                         msg.message = string.Format("Your {0} objects were returned from {1} in region {2} due to {3}", ret.Value.count, ret.Value.location.ToString(), RegionInfo.RegionName, ret.Value.reason);
                     else
@@ -2492,14 +2527,16 @@ namespace OpenSim.Region.Framework.Scenes
         /// <returns>False</returns>
         public virtual bool IncomingCreateObject(UUID userID, UUID itemID)
         {
-            //m_log.DebugFormat(" >>> IncomingCreateObject(userID, itemID) <<< {0} {1}", userID, itemID);
-            
-            ScenePresence sp = GetScenePresence(userID);
-            if (sp != null && AttachmentsModule != null)
-            {
-                uint attPt = (uint)sp.Appearance.GetAttachpoint(itemID);
-                AttachmentsModule.RezSingleAttachmentFromInventory(sp.ControllingClient, itemID, attPt);
-            }
+            m_log.DebugFormat(" >>> IncomingCreateObject(userID, itemID) <<< {0} {1}", userID, itemID);
+
+            // Commented out since this is as yet unused and is arguably not the appropriate place to do this, as
+            // attachments are being rezzed elsewhere in AddNewClient()
+//            ScenePresence sp = GetScenePresence(userID);
+//            if (sp != null && AttachmentsModule != null)
+//            {
+//                uint attPt = (uint)sp.Appearance.GetAttachpoint(itemID);
+//                AttachmentsModule.RezSingleAttachmentFromInventory(sp.ControllingClient, itemID, attPt);
+//            }
 
             return false;
         }
@@ -3272,8 +3309,8 @@ namespace OpenSim.Region.Framework.Scenes
                 if (AttachmentsModule != null && !avatar.IsChildAgent && avatar.PresenceType != PresenceType.Npc)
                     AttachmentsModule.SaveChangedAttachments(avatar);
 
-                if (avatar != null && (!avatar.IsChildAgent))
-                    avatar.SaveChangedAttachments();
+                if (AttachmentsModule != null && !avatar.IsChildAgent && avatar.PresenceType != PresenceType.Npc)
+                    AttachmentsModule.SaveChangedAttachments(avatar);
 
                 ForEachClient(
                     delegate(IClientAPI client)
diff --git a/OpenSim/Region/Framework/Scenes/SceneGraph.cs b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
index 42e2502..d1ee990 100644
--- a/OpenSim/Region/Framework/Scenes/SceneGraph.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneGraph.cs
@@ -83,7 +83,6 @@ namespace OpenSim.Region.Framework.Scenes
 
         protected internal EntityManager Entities = new EntityManager();
 
-        protected RegionInfo m_regInfo;
         protected Scene m_parentScene;
         protected Dictionary<UUID, SceneObjectGroup> m_updateList = new Dictionary<UUID, SceneObjectGroup>();
         protected int m_numRootAgents = 0;
@@ -117,10 +116,9 @@ namespace OpenSim.Region.Framework.Scenes
 
         #endregion
 
-        protected internal SceneGraph(Scene parent, RegionInfo regInfo)
+        protected internal SceneGraph(Scene parent)
         {
             m_parentScene = parent;
-            m_regInfo = regInfo;
         }
 
         public PhysicsScene PhysicsScene
@@ -131,7 +129,6 @@ namespace OpenSim.Region.Framework.Scenes
                 // If we're not doing the initial set
                 // Then we've got to remove the previous
                 // event handler
-
                 if (_PhyScene != null)
                     _PhyScene.OnPhysicsCrash -= physicsBasedCrash;
 
@@ -413,12 +410,12 @@ namespace OpenSim.Region.Framework.Scenes
 //                "[SCENEGRAPH]: Adding scene object {0} {1}, with {2} parts on {3}", 
 //                sceneObject.Name, sceneObject.UUID, sceneObject.Parts.Length, m_parentScene.RegionInfo.RegionName);
 
-            SceneObjectPart[] children = sceneObject.Parts;
+            SceneObjectPart[] parts = sceneObject.Parts;
 
             // Clamp child prim sizes and add child prims to the m_numPrim count
             if (m_parentScene.m_clampPrimSize)
             {
-                foreach (SceneObjectPart part in children)
+                foreach (SceneObjectPart part in parts)
                 {
                     Vector3 scale = part.Shape.Scale;
 
@@ -432,7 +429,7 @@ namespace OpenSim.Region.Framework.Scenes
                     part.Shape.Scale = scale;
                 }
             }
-            m_numPrim += children.Length;
+            m_numPrim += parts.Length;
 
             sceneObject.AttachToScene(m_parentScene);
 
@@ -452,15 +449,17 @@ namespace OpenSim.Region.Framework.Scenes
             
             lock (SceneObjectGroupsByFullPartID)
             {
-                SceneObjectGroupsByFullPartID[sceneObject.UUID] = sceneObject;
-                foreach (SceneObjectPart part in children)
+                foreach (SceneObjectPart part in parts)
                     SceneObjectGroupsByFullPartID[part.UUID] = sceneObject;
             }
 
             lock (SceneObjectGroupsByLocalPartID)
             {
-                SceneObjectGroupsByLocalPartID[sceneObject.LocalId] = sceneObject;
-                foreach (SceneObjectPart part in children)
+//                m_log.DebugFormat(
+//                    "[SCENE GRAPH]: Adding scene object {0} {1} {2} to SceneObjectGroupsByLocalPartID in {3}",
+//                    sceneObject.Name, sceneObject.UUID, sceneObject.LocalId, m_parentScene.RegionInfo.RegionName);
+
+                foreach (SceneObjectPart part in parts)
                     SceneObjectGroupsByLocalPartID[part.LocalId] = sceneObject;
             }
 
@@ -473,6 +472,10 @@ namespace OpenSim.Region.Framework.Scenes
         /// <returns>true if the object was deleted, false if there was no object to delete</returns>
         public bool DeleteSceneObject(UUID uuid, bool resultOfObjectLinked)
         {
+//            m_log.DebugFormat(
+//                "[SCENE GRAPH]: Deleting scene object with uuid {0}, resultOfObjectLinked = {1}",
+//                uuid, resultOfObjectLinked);
+
             EntityBase entity;
             if (!Entities.TryGetValue(uuid, out entity) || (!(entity is SceneObjectGroup)))
                 return false;
@@ -501,7 +504,6 @@ namespace OpenSim.Region.Framework.Scenes
                 SceneObjectPart[] parts = grp.Parts;
                 for (int i = 0; i < parts.Length; i++)
                     SceneObjectGroupsByFullPartID.Remove(parts[i].UUID);
-                SceneObjectGroupsByFullPartID.Remove(grp.RootPart.UUID);
             }
 
             lock (SceneObjectGroupsByLocalPartID)
@@ -509,7 +511,6 @@ namespace OpenSim.Region.Framework.Scenes
                 SceneObjectPart[] parts = grp.Parts;
                 for (int i = 0; i < parts.Length; i++)
                     SceneObjectGroupsByLocalPartID.Remove(parts[i].LocalId);
-                SceneObjectGroupsByLocalPartID.Remove(grp.RootPart.LocalId);
             }
 
             return Entities.Remove(uuid);
@@ -654,7 +655,7 @@ namespace OpenSim.Region.Framework.Scenes
             ScenePresence newAvatar = null;
 
             // ScenePresence always defaults to child agent
-            newAvatar = new ScenePresence(client, m_parentScene, m_regInfo, appearance, type);
+            newAvatar = new ScenePresence(client, m_parentScene, appearance, type);
 
             AddScenePresence(newAvatar);
 
@@ -721,7 +722,7 @@ namespace OpenSim.Region.Framework.Scenes
             if (!Entities.Remove(agentID))
             {
                 m_log.WarnFormat(
-                    "[SCENEGRAPH]: Tried to remove non-existent scene presence with agent ID {0} from scene Entities list",
+                    "[SCENE GRAPH]: Tried to remove non-existent scene presence with agent ID {0} from scene Entities list",
                     agentID);
             }
 
@@ -745,7 +746,7 @@ namespace OpenSim.Region.Framework.Scenes
                 }
                 else
                 {
-                    m_log.WarnFormat("[SCENEGRAPH]: Tried to remove non-existent scene presence with agent ID {0} from scene ScenePresences list", agentID);
+                    m_log.WarnFormat("[SCENE GRAPH]: Tried to remove non-existent scene presence with agent ID {0} from scene ScenePresences list", agentID);
                 }
             }
             finally
@@ -956,7 +957,8 @@ namespace OpenSim.Region.Framework.Scenes
             if (Entities.TryGetValue(localID, out entity))
                 return entity as SceneObjectGroup;
 
-            //m_log.DebugFormat("Entered GetGroupByPrim with localID {0}", localID);
+//            m_log.DebugFormat("[SCENE GRAPH]: Entered GetGroupByPrim with localID {0}", localID);
+
             SceneObjectGroup sog;
             lock (SceneObjectGroupsByLocalPartID)
                 SceneObjectGroupsByLocalPartID.TryGetValue(localID, out sog);
@@ -964,8 +966,24 @@ namespace OpenSim.Region.Framework.Scenes
             if (sog != null)
             {
                 if (sog.HasChildPrim(localID))
+                {
+//                    m_log.DebugFormat(
+//                        "[SCENE GRAPH]: Found scene object {0} {1} {2} containing part with local id {3} in {4}.  Returning.",
+//                        sog.Name, sog.UUID, sog.LocalId, localID, m_parentScene.RegionInfo.RegionName);
+
                     return sog;
-                SceneObjectGroupsByLocalPartID.Remove(localID);
+                }
+                else
+                {
+                    lock (SceneObjectGroupsByLocalPartID)
+                    {
+                        m_log.WarnFormat(
+                            "[SCENE GRAPH]: Found scene object {0} {1} {2} via SceneObjectGroupsByLocalPartID index but it doesn't contain part with local id {3}.  Removing from entry from index in {4}.",
+                            sog.Name, sog.UUID, sog.LocalId, localID, m_parentScene.RegionInfo.RegionName);
+
+                        SceneObjectGroupsByLocalPartID.Remove(localID);
+                    }
+                }
             }
 
             EntityBase[] entityList = GetEntities();
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.Inventory.cs b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.Inventory.cs
index 9f0ac4f..6bd9183 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectGroup.Inventory.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectGroup.Inventory.cs
@@ -388,5 +388,18 @@ namespace OpenSim.Region.Framework.Scenes
             for (int i = 0; i < parts.Length; i++)
                 parts[i].Inventory.ResumeScripts();
         }
+
+        /// <summary>
+        /// Returns true if any part in the scene object contains scripts, false otherwise.
+        /// </summary>
+        /// <returns></returns>
+        public bool ContainsScripts()
+        {
+            foreach (SceneObjectPart part in Parts)
+                if (part.Inventory.ContainsScripts())
+                    return true;
+
+            return false;
+        }
     }
 }
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs
index 1f0840d..f6b690c 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPartInventory.cs
@@ -1239,10 +1239,15 @@ namespace OpenSim.Region.Framework.Scenes
                 item.CurrentPermissions = perms;
                 item.BasePermissions = perms;
             }
+            
             m_inventorySerial++;
             HasInventoryChanged = true;
         }
 
+        /// <summary>
+        /// Returns true if this part inventory contains any scripts.  False otherwise.
+        /// </summary>
+        /// <returns></returns>
         public bool ContainsScripts()
         {
             foreach (TaskInventoryItem item in m_items.Values)
diff --git a/OpenSim/Region/Framework/Scenes/ScenePresence.cs b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
index 35a8df7..7a86f98 100644
--- a/OpenSim/Region/Framework/Scenes/ScenePresence.cs
+++ b/OpenSim/Region/Framework/Scenes/ScenePresence.cs
@@ -124,6 +124,8 @@ namespace OpenSim.Region.Framework.Scenes
 
         protected List<SceneObjectGroup> m_attachments = new List<SceneObjectGroup>();
 
+        public Object AttachmentsSyncLock { get; private set; }
+
         private Dictionary<UUID, ScriptControllers> scriptedcontrols = new Dictionary<UUID, ScriptControllers>();
         private ScriptControlled IgnoredControls = ScriptControlled.CONTROL_ZERO;
         private ScriptControlled LastCommands = ScriptControlled.CONTROL_ZERO;
@@ -199,7 +201,6 @@ namespace OpenSim.Region.Framework.Scenes
 
         private float m_health = 100f;
 
-        protected RegionInfo m_regionInfo;
         protected ulong crossingFromRegion;
 
         private readonly Vector3[] Dir_Vectors = new Vector3[11];
@@ -770,23 +771,24 @@ namespace OpenSim.Region.Framework.Scenes
         #endregion
 
         #region Constructor(s)
-        
+
         public ScenePresence(
-            IClientAPI client, Scene world, RegionInfo reginfo, AvatarAppearance appearance, PresenceType type)
+            IClientAPI client, Scene world, AvatarAppearance appearance, PresenceType type)
         {
+            AttachmentsSyncLock = new Object();
+
             m_sendCourseLocationsMethod = SendCoarseLocationsDefault;
             m_sceneViewer = new SceneViewer(this);
             m_animator = new ScenePresenceAnimator(this);
             PresenceType = type;
             m_DrawDistance = world.DefaultDrawDistance;
-            m_rootRegionHandle = reginfo.RegionHandle;
+            m_rootRegionHandle = world.RegionInfo.RegionHandle;
             m_controllingClient = client;
             m_firstname = m_controllingClient.FirstName;
             m_lastname = m_controllingClient.LastName;
             m_name = String.Format("{0} {1}", m_firstname, m_lastname);
             m_scene = world;
             m_uuid = client.AgentId;
-            m_regionInfo = reginfo;
             m_localId = m_scene.AllocateLocalId();
 
             UserAccount account = m_scene.UserAccountService.GetUserAccount(m_scene.RegionInfo.ScopeID, m_uuid);
@@ -1302,7 +1304,7 @@ namespace OpenSim.Region.Framework.Scenes
 
             //m_log.DebugFormat("Completed movement");
 
-            m_controllingClient.MoveAgentIntoRegion(m_regionInfo, AbsolutePosition, look);
+            m_controllingClient.MoveAgentIntoRegion(m_scene.RegionInfo, AbsolutePosition, look);
             SendInitialData();
 
             // Create child agents in neighbouring regions
@@ -3226,8 +3228,8 @@ namespace OpenSim.Region.Framework.Scenes
         /// </returns>
         protected int HaveNeighbor(Cardinals car, ref int[] fix)
         {
-            uint neighbourx = m_regionInfo.RegionLocX;
-            uint neighboury = m_regionInfo.RegionLocY;
+            uint neighbourx = m_scene.RegionInfo.RegionLocX;
+            uint neighboury = m_scene.RegionInfo.RegionLocY;
 
             int dir = (int)car;
 
@@ -3247,8 +3249,8 @@ namespace OpenSim.Region.Framework.Scenes
 
             if (neighbourRegion == null)
             {
-                fix[0] = (int)(m_regionInfo.RegionLocX - neighbourx);
-                fix[1] = (int)(m_regionInfo.RegionLocY - neighboury);
+                fix[0] = (int)(m_scene.RegionInfo.RegionLocX - neighbourx);
+                fix[1] = (int)(m_scene.RegionInfo.RegionLocY - neighboury);
                 return dir * (-1);
             }
             else
@@ -3494,26 +3496,30 @@ namespace OpenSim.Region.Framework.Scenes
             catch { }
 
             // Attachment objects
-            if (m_attachments != null && m_attachments.Count > 0)
+            lock (m_attachments)
             {
-                cAgent.AttachmentObjects = new List<ISceneObject>();
-                cAgent.AttachmentObjectStates = new List<string>();
-//                IScriptModule se = m_scene.RequestModuleInterface<IScriptModule>();
-                m_InTransitScriptStates.Clear();
-                foreach (SceneObjectGroup sog in m_attachments)
+                if (m_attachments.Count > 0)
                 {
-                    // We need to make a copy and pass that copy
-                    // because of transfers withn the same sim
-                    ISceneObject clone = sog.CloneForNewScene();
-                    // Attachment module assumes that GroupPosition holds the offsets...!
-                    ((SceneObjectGroup)clone).RootPart.GroupPosition = sog.RootPart.AttachedPos;
-                    ((SceneObjectGroup)clone).IsAttachment = false;
-                    cAgent.AttachmentObjects.Add(clone);
-                    string state = sog.GetStateSnapshot();
-                    cAgent.AttachmentObjectStates.Add(state);
-                    m_InTransitScriptStates.Add(state);
-                    // Let's remove the scripts of the original object here
-                    sog.RemoveScriptInstances(true);
+                    cAgent.AttachmentObjects = new List<ISceneObject>();
+                    cAgent.AttachmentObjectStates = new List<string>();
+    //                IScriptModule se = m_scene.RequestModuleInterface<IScriptModule>();
+                    m_InTransitScriptStates.Clear();
+
+                    foreach (SceneObjectGroup sog in m_attachments)
+                    {
+                        // We need to make a copy and pass that copy
+                        // because of transfers withn the same sim
+                        ISceneObject clone = sog.CloneForNewScene();
+                        // Attachment module assumes that GroupPosition holds the offsets...!
+                        ((SceneObjectGroup)clone).RootPart.GroupPosition = sog.RootPart.AttachedPos;
+                        ((SceneObjectGroup)clone).IsAttachment = false;
+                        cAgent.AttachmentObjects.Add(clone);
+                        string state = sog.GetStateSnapshot();
+                        cAgent.AttachmentObjectStates.Add(state);
+                        m_InTransitScriptStates.Add(state);
+                        // Let's remove the scripts of the original object here
+                        sog.RemoveScriptInstances(true);
+                    }
                 }
             }
         }
@@ -3931,7 +3937,8 @@ if (m_animator.m_jumping) force.Z = m_animator.m_jumpVelocity;     // add for ju
 
         public void Close()
         {
-            m_scene.AttachmentsModule.DeleteAttachmentsFromScene(this, false);
+            if (!IsChildAgent)
+                m_scene.AttachmentsModule.DeleteAttachmentsFromScene(this, false);
             
             lock (m_knownChildRegions)
             {
@@ -4035,8 +4042,13 @@ if (m_animator.m_jumping) force.Z = m_animator.m_jumpVelocity;     // add for ju
                 m_attachments.Clear();
         }
 
+        /// <summary>
+        /// This is currently just being done for information.
+        /// </summary>
         public bool ValidateAttachments()
         {
+            bool validated = true;
+
             lock (m_attachments)
             {
                 // Validate
@@ -4045,21 +4057,22 @@ if (m_animator.m_jumping) force.Z = m_animator.m_jumpVelocity;     // add for ju
                     if (gobj == null)
                     {
                         m_log.WarnFormat(
-                            "[SCENE PRESENCE]: Failed to validate an attachment for {0} since it was null", Name);
-                        return false;
-                    }
+                            "[SCENE PRESENCE]: Failed to validate an attachment for {0} since it was null.  Continuing", Name);
 
-                    if (gobj.IsDeleted)
+                        validated = false;
+                    }
+                    else if (gobj.IsDeleted)
                     {
                         m_log.WarnFormat(
-                            "[SCENE PRESENCE]: Failed to validate attachment {0} {1} for {2} since it had been deleted",
+                            "[SCENE PRESENCE]: Failed to validate attachment {0} {1} for {2} since it had been deleted.  Continuing",
                             gobj.Name, gobj.UUID, Name);
-                        return false;
+
+                        validated = false;
                     }
                 }
             }
 
-            return true;
+            return validated;
         }
 
         /// <summary>
@@ -4091,29 +4104,6 @@ if (m_animator.m_jumping) force.Z = m_animator.m_jumpVelocity;     // add for ju
             }
         }
 
-
-        public void initializeScenePresence(IClientAPI client, RegionInfo region, Scene scene)
-        {
-            m_controllingClient = client;
-            m_regionInfo = region;
-            m_scene = scene;
-
-            RegisterToEvents();
-
-            /*
-            AbsolutePosition = client.StartPos;
-
-            Animations = new AvatarAnimations();
-            Animations.LoadAnims();
-
-            m_animations = new List<UUID>();
-            m_animations.Add(Animations.AnimsUUID["STAND"]);
-            m_animationSeqs.Add(m_controllingClient.NextAnimationSequenceNumber);
-
-            SetDirectionVectors();
-            */
-        }
-
         internal void PushForce(Vector3 impulse)
         {
             if (PhysicsActor != null)
@@ -4141,6 +4131,7 @@ if (m_animator.m_jumping) force.Z = m_animator.m_jumpVelocity;     // add for ju
                 obj.ignoreControls = (ScriptControlled)controls;
                 obj.eventControls = (ScriptControlled)controls;
             }
+
             if (pass_on == 1 && accept == 1)
             {
                 IgnoredControls = ScriptControlled.CONTROL_ZERO;
@@ -4161,6 +4152,7 @@ if (m_animator.m_jumping) force.Z = m_animator.m_jumpVelocity;     // add for ju
                     scriptedcontrols[Script_item_UUID] = obj;
                 }
             }
+
             ControllingClient.SendTakeControls(controls, pass_on == 1 ? true : false, true);
         }
 
@@ -4351,29 +4343,6 @@ if (m_animator.m_jumping) force.Z = m_animator.m_jumpVelocity;     // add for ju
                 return(new Vector3(x,y,z));
             }
 
-        public void SaveChangedAttachments()
-        {
-            // Need to copy this list because DetachToInventoryPrep mods it
-            List<SceneObjectGroup> attachments = new List<SceneObjectGroup>(GetAttachments().ToArray());
-
-            IAttachmentsModule attachmentsModule = m_scene.AttachmentsModule;
-            if (attachmentsModule != null)
-            {
-                foreach (SceneObjectGroup grp in attachments)
-                {
-                    if (grp.HasGroupChanged) // Resizer scripts?
-                    {
-                        grp.IsAttachment = false;
-                        grp.AbsolutePosition = grp.RootPart.AttachedPos;
-//                        grp.DetachToInventoryPrep();
-                        attachmentsModule.UpdateKnownItem(ControllingClient,
-                                grp, grp.GetFromItemID(), grp.OwnerID);
-                        grp.IsAttachment = true;
-                    }
-                }
-            }
-        }
-
         private void CheckLandingPoint(ref Vector3 pos)
         {
             // Never constrain lures
diff --git a/OpenSim/Region/Framework/Scenes/SceneViewer.cs b/OpenSim/Region/Framework/Scenes/SceneViewer.cs
index 501487a..8a0d288 100644
--- a/OpenSim/Region/Framework/Scenes/SceneViewer.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneViewer.cs
@@ -38,27 +38,42 @@ namespace OpenSim.Region.Framework.Scenes
 {
     public class SceneViewer : ISceneViewer
     {
+        /// <summary>
+        /// Is this scene viewer enabled?
+        /// </summary>
+        private bool IsEnabled { get; set; }
+
+        /// <summary>
+        /// The scene presence serviced by this viewer.
+        /// </summary>
         protected ScenePresence m_presence;
+
+        /// <summary>
+        /// The queue of parts for which we need to send out updates.
+        /// </summary>
         protected UpdateQueue m_partsUpdateQueue = new UpdateQueue();
+
+        /// <summary>
+        /// The queue of objects for which we need to send out updates.
+        /// </summary>
         protected Queue<SceneObjectGroup> m_pendingObjects;
 
+        /// <summary>
+        /// The last update assocated with a given part update.
+        /// </summary>
         protected Dictionary<UUID, ScenePartUpdate> m_updateTimes = new Dictionary<UUID, ScenePartUpdate>();
 
-        public SceneViewer()
-        {
-        }
-
         public SceneViewer(ScenePresence presence)
         {
             m_presence = presence;
+            IsEnabled = true;
         }
 
-        /// <summary>
-        /// Add the part to the queue of parts for which we need to send an update to the client
-        /// </summary>
-        /// <param name="part"></param>
         public void QueuePartForUpdate(SceneObjectPart part)
         {
+            if (!IsEnabled)
+                return;
+
             lock (m_partsUpdateQueue)
             {
                 m_partsUpdateQueue.Enqueue(part);
@@ -87,6 +102,11 @@ namespace OpenSim.Region.Framework.Scenes
 
             lock (m_pendingObjects)
             {
+                // We must do this under lock so that we don't suffer a race condition if another thread closes the
+                // viewer
+                if (!IsEnabled)
+                    return;
+
                 while (m_pendingObjects != null && m_pendingObjects.Count > 0)
                 {
                     SceneObjectGroup g = m_pendingObjects.Dequeue();
@@ -119,7 +139,6 @@ namespace OpenSim.Region.Framework.Scenes
 
                         // We deal with the possibility that two updates occur at
                         // the same unix time at the update point itself.
-
                         if ((update.LastFullUpdateTime < part.TimeStampFull) || part.ParentGroup.IsAttachment)
                         {
     //                            m_log.DebugFormat(
@@ -135,9 +154,7 @@ namespace OpenSim.Region.Framework.Scenes
                             // this update. If this happened, then subsequent
                             // updates which occurred on the same tick or the
                             // next tick of the last update would be ignored.
-
                             update.LastFullUpdateTime = part.TimeStampFull;
-
                         }
                         else if (update.LastTerseUpdateTime <= part.TimeStampTerse)
                         {
@@ -176,38 +193,46 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        public void Reset()
-        {
-            if (m_pendingObjects == null)
-                return;
+//        public void Reset()
+//        {
+//            if (m_pendingObjects == null)
+//                return;
+//
+//            lock (m_pendingObjects)
+//            {
+//                if (m_pendingObjects != null)
+//                {
+//                    m_pendingObjects.Clear();
+//                    m_pendingObjects = null;
+//                }
+//            }
+//        }
 
+        public void Close()
+        {
             lock (m_pendingObjects)
             {
-                if (m_pendingObjects != null)
+                // We perform this under the m_pendingObjects lock in order to avoid a race condition with another
+                // thread on SendPrimUpdates()
+                IsEnabled = false;
+
+                lock (m_updateTimes)
                 {
-                    m_pendingObjects.Clear();
-                    m_pendingObjects = null;
+                    m_updateTimes.Clear();
                 }
-            }
-        }
 
-        public void Close()
-        {
-            lock (m_updateTimes)
-            {
-                m_updateTimes.Clear();
-            }
-            lock (m_partsUpdateQueue)
-            {
-                m_partsUpdateQueue.Clear();
+                lock (m_partsUpdateQueue)
+                {
+                    m_partsUpdateQueue.Clear();
+                }
             }
-            Reset();
         }
 
         public int GetPendingObjectsCount()
         {
             if (m_pendingObjects != null)
-                return m_pendingObjects.Count;
+                lock (m_pendingObjects)
+                    return m_pendingObjects.Count;
 
             return 0;
         }
diff --git a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectBasicTests.cs b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectBasicTests.cs
index 1ea2329..80f198d 100644
--- a/OpenSim/Region/Framework/Scenes/Tests/SceneObjectBasicTests.cs
+++ b/OpenSim/Region/Framework/Scenes/Tests/SceneObjectBasicTests.cs
@@ -52,22 +52,25 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             TestHelpers.InMethod();
 
             Scene scene = SceneHelpers.SetupScene();
+            int partsToTestCount = 3;
 
-            string objName = "obj1";
-            UUID objUuid = new UUID("00000000-0000-0000-0000-000000000001");
-
-            SceneObjectPart part
-                = new SceneObjectPart(UUID.Zero, PrimitiveBaseShape.Default, Vector3.Zero, Quaternion.Identity, Vector3.Zero) 
-                    { Name = objName, UUID = objUuid };
+            SceneObjectGroup so
+                = SceneHelpers.CreateSceneObject(partsToTestCount, TestHelpers.ParseTail(0x1), "obj1", 0x10);
+            SceneObjectPart[] parts = so.Parts;
 
-            Assert.That(scene.AddNewSceneObject(new SceneObjectGroup(part), false), Is.True);
-            
-            SceneObjectPart retrievedPart = scene.GetSceneObjectPart(objUuid);
+            Assert.That(scene.AddNewSceneObject(so, false), Is.True);
+            SceneObjectGroup retrievedSo = scene.GetSceneObjectGroup(so.UUID);
+            SceneObjectPart[] retrievedParts = retrievedSo.Parts;
             
             //m_log.Debug("retrievedPart : {0}", retrievedPart);
             // If the parts have the same UUID then we will consider them as one and the same
-            Assert.That(retrievedPart.Name, Is.EqualTo(objName));
-            Assert.That(retrievedPart.UUID, Is.EqualTo(objUuid));
+            Assert.That(retrievedSo.PrimCount, Is.EqualTo(partsToTestCount));
+
+            for (int i = 0; i < partsToTestCount; i++)
+            {
+                Assert.That(retrievedParts[i].Name, Is.EqualTo(parts[i].Name));
+                Assert.That(retrievedParts[i].UUID, Is.EqualTo(parts[i].UUID));
+            }
         }
 
         [Test]
@@ -103,6 +106,39 @@ namespace OpenSim.Region.Framework.Scenes.Tests
             Assert.That(retrievedPart.Name, Is.EqualTo(obj1Name));
             Assert.That(retrievedPart.UUID, Is.EqualTo(objUuid));
         }
+
+        /// <summary>
+        /// Test retrieving a scene object via the local id of one of its parts.
+        /// </summary>
+        [Test]
+        public void TestGetSceneObjectByPartLocalId()
+        {
+            TestHelpers.InMethod();
+
+            Scene scene = SceneHelpers.SetupScene();
+            int partsToTestCount = 3;
+
+            SceneObjectGroup so
+                = SceneHelpers.CreateSceneObject(partsToTestCount, TestHelpers.ParseTail(0x1), "obj1", 0x10);
+            SceneObjectPart[] parts = so.Parts;
+
+            scene.AddNewSceneObject(so, false);
+
+            // Test getting via the root part's local id
+            Assert.That(scene.GetGroupByPrim(so.LocalId), Is.Not.Null);
+
+            // Test getting via a non root part's local id
+            Assert.That(scene.GetGroupByPrim(parts[partsToTestCount - 1].LocalId), Is.Not.Null);
+
+            // Test that we don't get back an object for a local id that doesn't exist
+            Assert.That(scene.GetGroupByPrim(999), Is.Null);
+
+            // Now delete the scene object and check again
+            scene.DeleteSceneObject(so, false);
+
+            Assert.That(scene.GetGroupByPrim(so.LocalId), Is.Null);
+            Assert.That(scene.GetGroupByPrim(parts[partsToTestCount - 1].LocalId), Is.Null);
+        }
         
         /// <summary>
         /// Test deleting an object from a scene.
diff --git a/OpenSim/Region/Framework/Scenes/UuidGatherer.cs b/OpenSim/Region/Framework/Scenes/UuidGatherer.cs
index fdfbc78..8d41f00 100644
--- a/OpenSim/Region/Framework/Scenes/UuidGatherer.cs
+++ b/OpenSim/Region/Framework/Scenes/UuidGatherer.cs
@@ -43,11 +43,12 @@ namespace OpenSim.Region.Framework.Scenes
     /// <summary>
     /// Gather uuids for a given entity.
     /// </summary>
-    ///
+    /// <remarks>
     /// This does a deep inspection of the entity to retrieve all the assets it uses (whether as textures, as scripts
     /// contained in inventory, as scripts contained in objects contained in another object's inventory, etc.  Assets
     /// are only retrieved when they are necessary to carry out the inspection (i.e. a serialized object needs to be
     /// retrieved to work out which assets it references).
+    /// </remarks>
     public class UuidGatherer
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
@@ -76,11 +77,11 @@ namespace OpenSim.Region.Framework.Scenes
         /// <summary>
         /// Gather all the asset uuids associated with the asset referenced by a given uuid
         /// </summary>
-        /// 
+        /// <remarks>
         /// This includes both those directly associated with
         /// it (e.g. face textures) and recursively, those of items within it's inventory (e.g. objects contained
         /// within this object).
-        /// 
+        /// </remarks>
         /// <param name="assetUuid">The uuid of the asset for which to gather referenced assets</param>
         /// <param name="assetType">The type of the asset for the uuid given</param>
         /// <param name="assetUuids">The assets gathered</param>
@@ -119,11 +120,11 @@ namespace OpenSim.Region.Framework.Scenes
         /// <summary>
         /// Gather all the asset uuids associated with a given object.
         /// </summary>
-        /// 
+        /// <remarks>
         /// This includes both those directly associated with
         /// it (e.g. face textures) and recursively, those of items within it's inventory (e.g. objects contained
         /// within this object).
-        /// 
+        /// </remarks>
         /// <param name="sceneObject">The scene object for which to gather assets</param>
         /// <param name="assetUuids">The assets gathered</param>
         public void GatherAssetUuids(SceneObjectGroup sceneObject, IDictionary<UUID, AssetType> assetUuids)