i have error:
2011.6.11 09:45:53
OS : Windows XP 5.1 (Build: 2600)
CPU : AuthenticAMD AMD Phenom II X4 955 Processor @ 3423 MHz 2046MB RAM
Video : NVIDIA GeForce 9600 GT (8206)
PosCode : LS1(268) 0:0:0 4/0 [363]
Model SkyLevel.Model29: Serial size mismatch: Got 5683, Expected 5688
History: LoadObject <- (Model SkyLevel.Model29 14782==14782/23046 9099 5688) <- ULinkerLoad::Preload <- ULevel::Serialize <- LoadObject <- (Level SkyLevel.myLevel 14782==14782/23046 21428 113) <- ULinkerLoad::Preload <- PreLoadObjects <- UObject::EndLoad <- UObject::StaticLoadObject <- (Engine.Level None.MyLevel SkyLevel) <- LoadLevel <- UGameEngine::LoadMap <- MapName=SkyLevel <- UGameEngine::Init <- InitEngine
what is it?