diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index ec5aa49f87..9427061df4 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -4692,7 +4692,9 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                 y = rot.y / s;
                 z = rot.z / s;
             }
-
+            if ((double.IsNaN(x)) || double.IsInfinity(x)) x = 0;
+            if ((double.IsNaN(y)) || double.IsInfinity(y)) y = 0;
+            if ((double.IsNaN(z)) || double.IsInfinity(z)) z = 0;
             return new LSL_Vector(x,y,z);
         }
 
@@ -4714,7 +4716,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             }
 
             double angle = 2 * Math.Acos(rot.s);
-
+            if ((double.IsNaN(angle)) || double.IsInfinity(angle)) angle = 0;
             return angle;
         }