error....

[warczah]

2011.2.21 13:29:34
OS : Windows Vista 6.1 (Build: 7600)
CPU : GenuineIntel  Intel(R) Core(TM) i5 CPU       M 460  @ 2.53GHz @ 2528 MHz 3885MB RAM
Video : ATI Mobility Radeon HD 5730 (6113)
PosCode : LS8(83) 0:0:0 4/1 [452]

Assertion failed: Defaults.Num() [File:d:\work\ct2final\2009_01_21\warfare2110\core\inc\UnClass.h] [Line: 551]

History: ULevel::SpawnActor <- (MMagic) <- UMasterLevel::SpawnActor <- UObject::ProcessEvent <- (GameInfo GameInfo3, Function Engine.GameInfo.SpawnPlayerPawn) <- Setting 2 <- UIPacket <- UNetworkHandler::Tick <- Function Name=UIPacket <- UGameEngine::Tick <- UpdateWorld <- MainLoop

can any1 help me with this error?