L 12/06/2009 - 01:51:57: [SM] Native "KillTimer" reported: Invalid timer handle 168a0109 (error 1) L 12/06/2009 - 01:51:57: [SM] Displaying call stack trace for plugin "l4d2_bulldozercertificate.smx": L 12/06/2009 - 01:51:57: [SM] [0] Line 67, l4d2_bulldozercertificate.sp::Event_Impact()