入唔到game~HELP

牧村南

入GAME就彈下面D字出來
2009.5.4 04:30:33
OS : Windows Vista 6.0 (Build: 6001)
CPU : GenuineIntel  Intel(R) Core(TM)2 Quad  CPU   Q9450  @ 2.66GHz @ 2672 MHz 2047MB RAM
Video : NVIDIA GeForce GTX 260 (7723)
PosCode : LS3(83) 0:0:0 4/0 [572]

Failed to find object 'Class ALAudio.ALAudioSubsystem'

History: UObject::SafeLoadError <- UObject::StaticLoadClass <- UEngine::InitAudio <- UGameEngine::Init <- InitEngine