ok try'd it and here is what i found in the logs.
L 10/06/2010 - 01
0:25: [SM] Native "IsClientInGame" reported: Client index 17 is invalid
L 10/06/2010 - 01
0:25: [SM] Displaying call stack trace for plugin "tf_casualtyreport.smx":
L 10/06/2010 - 01
0:25: [SM] [0] Line 153, scripting\tf_casualtyreport.sp::RoundWon()
L 10/06/2010 - 01
4:41: [SM] Native "IsClientInGame" reported: Client index 17 is invalid
L 10/06/2010 - 01
4:41: [SM] Displaying call stack trace for plugin "tf_casualtyreport.smx":
L 10/06/2010 - 01
4:41: [SM] [0] Line 153, scripting\tf_casualtyreport.sp::RoundWon()
L 10/06/2010 - 01:40
6: Error log file session closed.
L 10/06/2010 - 02:12:23: SourceMod error session started