Server crash

Hello. My server is crashing some times. That crashs started 2 days ago and i don't know why. Usually is crashing when is changing maps. Here is the log of the last game crash:

Quote:

Error: KFSXHumanPawn KF-BioticsLab.KFSXHumanPawn (Function KFMod.KFPawn.PlayDyingSound:007E) Accessed null class context 'SoundGroupClass' Log: Forged object: got ObjectProperty GUI2K4.UT2K4BotInfoPage.pb_Tactics, expecting Class Engine.Pawn Warning: KnifePickup KF-BioticsLab.KnifePickup (Function KFMod.KFWeaponPickup.Destroyed:0019) Accessed None 'Inventory' ScriptLog: [BRA] [S.N]_ToNY. logged out. Critical: CashPickup KF-BioticsLab.CashPickup (Function KFMod.CashPickup.Pickup.ValidTouch:0001) Runaway loop detected (over 10000000 iterations) Exit: Executing UObject::StaticShutdownAfterError Critical: FFrame::Serialize Critical: UObject::ProcessEvent Critical: (CashPickup KF-BioticsLab.CashPickup, Function KFMod.CashPickup.Pickup.Touch) Critical: TouchTo Critical: AActor::BeginTouch Critical: ULevel::MoveActor Critical: CashPickup Critical: AActor::physFalling Critical: AActor::performPhysics Critical: AActor::Tick Critical: TickAllActors Critical: ULevel::Tick Critical: (NetMode=1) Critical: TickLevel Critical: UGameEngine::Tick Critical: Level KF-BioticsLab Critical: UpdateWorld Critical: UServerCommandlet::Main Exit: Exiting. Log: FileManager: Reading 2 GByte 4738 MByte 4195029 KByte 940 Bytes from HD took 17.328147 seconds (16.917149 reading, 0.410998 seeking). Log: FileManager: 7.041701 seconds spent with misc. duties Uninitialized: Name subsystem shut down Uninitialized: Log file closed, 05/25/14 12:16:52

Any one know why?



Thanks