2 files changed, 10 insertions, 2 deletions

diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index e18d9cf..eb68038 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -4779,7 +4779,13 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         public void llCollisionSound(string impact_sound, double impact_volume)
         {
             m_host.AddScriptLPS(1);
-            
+
+            if(impact_sound == "")
+            {
+                m_host.CollisionSoundVolume = (float)impact_volume;
+                m_host.CollisionSound = m_host.invalidCollisionSoundUUID;
+                return;
+            }
             // TODO: Parameter check logic required.
             UUID soundId = UUID.Zero;
             if (!UUID.TryParse(impact_sound, out soundId))
@@ -4795,8 +4801,8 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 }
                 m_host.TaskInventory.LockItemsForRead(false);
             }
-            m_host.CollisionSound = soundId;
             m_host.CollisionSoundVolume = (float)impact_volume;
+            m_host.CollisionSound = soundId;
         }
 
         public LSL_String llGetAnimation(string id)
diff --git a/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs b/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
index ff1f277..5e68d69 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Instance/ScriptInstance.cs
@@ -847,6 +847,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
             SceneObjectPart part = Engine.World.GetSceneObjectPart(LocalID);
             part.Inventory.GetInventoryItem(ItemID).PermsMask = 0;
             part.Inventory.GetInventoryItem(ItemID).PermsGranter = UUID.Zero;
+            part.CollisionSound = UUID.Zero;
             AsyncCommandManager.RemoveScript(Engine, LocalID, ItemID);
             EventQueue.Clear();
             m_Script.ResetVars();
@@ -873,6 +874,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Instance
             SceneObjectPart part = Engine.World.GetSceneObjectPart(LocalID);
             part.Inventory.GetInventoryItem(ItemID).PermsMask = 0;
             part.Inventory.GetInventoryItem(ItemID).PermsGranter = UUID.Zero;
+            part.CollisionSound = UUID.Zero;
             AsyncCommandManager.RemoveScript(Engine, LocalID, ItemID);
 
             EventQueue.Clear();