diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LS_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LS_Api.cs
index e5e43f80fd..8cd065b36a 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LS_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LS_Api.cs
@@ -295,7 +295,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                         idx++;
                         try
                         {
-                            iQ = rules.GetQuaternionItem(idx);
+                            iQ = rules.GetVector4Item(idx);
                         }
                         catch (InvalidCastException)
                         {
@@ -319,7 +319,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                         idx++;
                         try
                         {
-                            iQ = rules.GetQuaternionItem(idx);
+                            iQ = rules.GetVector4Item(idx);
                         }
                         catch (InvalidCastException)
                         {
@@ -342,7 +342,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                         idx++;
                         try
                         {
-                            iQ = rules.GetQuaternionItem(idx);
+                            iQ = rules.GetVector4Item(idx);
                         }
                         catch (InvalidCastException)
                         {
@@ -532,7 +532,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                         idx++;
                         try
                         {
-                            iQ = rules.GetQuaternionItem(idx);
+                            iQ = rules.GetVector4Item(idx);
                         }
                         catch (InvalidCastException)
                         {
@@ -654,7 +654,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                         break;
                     case (int)ScriptBaseClass.WL_SUN_MOON_COLOR:
                         idx++;
-                        iQ = rules.GetQuaternionItem(idx);
+                        iQ = rules.GetVector4Item(idx);
                         try
                         {
                             wl.sunMoonColor = new Vector4((float)iQ.x, (float)iQ.y, (float)iQ.z, (float)iQ.s);
diff --git a/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs b/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
index c36e7c6c04..738a814602 100644
--- a/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/LSL_Types.cs
@@ -700,6 +700,31 @@ namespace OpenSim.Region.ScriptEngine.Shared
                 }
             }
 
+            // use LSL_Types.Quaternion to parse and store a vector4 for lightShare
+            public LSL_Types.Quaternion GetVector4Item(int itemIndex)
+            {
+                if (Data[itemIndex] is LSL_Types.Quaternion)
+                {
+                    LSL_Types.Quaternion q = (LSL_Types.Quaternion)Data[itemIndex];
+                    return q;
+                }
+                else if(Data[itemIndex] is OpenMetaverse.Quaternion)
+                {
+                    LSL_Types.Quaternion q = new LSL_Types.Quaternion(
+                            (OpenMetaverse.Quaternion)Data[itemIndex]);
+                    q.Normalize();
+                    return q;
+                }
+                else
+                {
+                    throw new InvalidCastException(string.Format(
+                        "{0} expected but {1} given",
+                        typeof(LSL_Types.Quaternion).Name,
+                        Data[itemIndex] != null ?
+                        Data[itemIndex].GetType().Name : "null"));
+                }
+            }
+
             public LSL_Types.Quaternion GetQuaternionItem(int itemIndex)
             {
                 if (Data[itemIndex] is LSL_Types.Quaternion)