diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 68b645eea9..71d63bb593 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -100,6 +100,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         protected int m_notecardLineReadCharsMax = 255;
         protected int m_scriptConsoleChannel = 0;
         protected bool m_scriptConsoleChannelEnabled = false;
+        protected bool m_debuggerSafe = false;
         protected IUrlModule m_UrlModule = null;
         protected Dictionary<UUID, UserInfoCacheEntry> m_userInfoCache =
                 new Dictionary<UUID, UserInfoCacheEntry>();
@@ -110,6 +111,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             m_host = host;
             m_localID = localID;
             m_itemID = itemID;
+            m_debuggerSafe = m_ScriptEngine.Config.GetBoolean("DebuggerSafe", false);
 
             m_ScriptDelayFactor =
                 m_ScriptEngine.Config.GetFloat("ScriptDelayFactor", 1.0f);
@@ -3220,13 +3222,15 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             return m_host.OwnerID.ToString();
         }
 
-        [DebuggerNonUserCode]
         public void llInstantMessage(string user, string message)
         {
             UUID result;
             if (!UUID.TryParse(user, out result))
             {
-                throw new Exception(String.Format("An invalid key of '{0} was passed to llInstantMessage", user));
+                if (!m_debuggerSafe)
+                {
+                    throw new Exception(String.Format("An invalid key of '{0} was passed to llInstantMessage", user));
+                }
                 return;
             }
             
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
index 80b021fcee..73e87b5583 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/OSSL_Api.cs
@@ -129,6 +129,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
         internal ThreatLevel m_MaxThreatLevel = ThreatLevel.VeryLow;
         internal float m_ScriptDelayFactor = 1.0f;
         internal float m_ScriptDistanceFactor = 1.0f;
+        internal bool m_debuggerSafe = false;
         internal Dictionary<string, FunctionPerms > m_FunctionPerms = new Dictionary<string, FunctionPerms >();
 
         public void Initialize(IScriptEngine ScriptEngine, SceneObjectPart host, uint localID, UUID itemID)
@@ -137,6 +138,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             m_host = host;
             m_localID = localID;
             m_itemID = itemID;
+            m_debuggerSafe = m_ScriptEngine.Config.GetBoolean("DebuggerSafe", false);
 
             if (m_ScriptEngine.Config.GetBoolean("AllowOSFunctions", false))
                 m_OSFunctionsEnabled = true;
@@ -195,7 +197,14 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
 
         internal void OSSLError(string msg)
         {
-            throw new Exception("OSSL Runtime Error: " + msg);
+            if (m_debuggerSafe)
+            {
+                OSSLShoutError(msg);
+            }
+            else
+            {
+                throw new Exception("OSSL Runtime Error: " + msg);
+            }
         }
 
         private void InitLSL()