Another one, missed this at first look into the error log
Code:
L 12/20/2006 - 17:41:14: Info (map "fy_berlinwall") (logfile "error_122006.log")
L 12/20/2006 - 17:41:14: [CSTRIKE] Invalid player 6
L 12/20/2006 - 17:41:15: [AMXX] Displaying debug trace (plugin "weaponarena.amxx")
L 12/20/2006 - 17:41:15: [AMXX] Run time error 10: native error (native "cs_get_user_team")
L 12/20/2006 - 17:41:15: [AMXX] [0] 9794.attach::handledrop (line 2304)