diff --git a/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventQueueThreadClass.cs b/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventQueueThreadClass.cs
index 997f46f858..6f266c3d78 100644
--- a/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventQueueThreadClass.cs
+++ b/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventQueueThreadClass.cs
@@ -296,18 +296,22 @@ namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
                                 {
                                     // Send inner exception
                                     string[] lines=e.InnerException.ToString().Replace("\r", "").Split('\n');
-                                    int line=0;
+                                    string line = " (unknown line)";
                                     foreach (string t in lines)
                                     {
                                         int idx=t.IndexOf("SecondLife.Script.");
                                         if (idx != -1)
                                         {
                                             int colon=t.IndexOf(":");
-                                            line=Convert.ToInt32(t.Substring(colon+1));
-                                            break;
+
+                                            if(-1 != colon)
+                                            {
+                                                line = " at line " + Convert.ToInt32(t.Substring(colon + 1)).ToString();
+                                                break;
+                                            }
                                         }
                                     }
-                                    text += e.InnerException.Message.ToString()+" in line "+line.ToString();
+                                    text += e.InnerException.Message.ToString() + line;
                                 }
                                 else
                                 {