1 files changed, 4 insertions, 1 deletions

diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/Timer.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/Timer.cs
index 0716d45..eeb59d9 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/Timer.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/Plugins/Timer.cs
@@ -166,7 +166,10 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Plugins
                 ts.next = DateTime.Now.Ticks + (long)data[idx+1];
                 idx += 2;
 
-                Timers.Add(MakeTimerKey(localID,itemID), ts);
+                lock (TimerListLock)
+                {
+                    Timers.Add(MakeTimerKey(localID, itemID), ts);
+                }
             }
         }
     }