ERROR

[qruta22]

I have a problem, someone can help me
2011.8.31 08:34:31
OS : Windows Vista 6.1 (Build: 7600)
CPU : GenuineIntel  Intel(R) Core(TM)2 Duo CPU     P7450  @ 2.13GHz @ 2128 MHz 4090MB RAM
Video : NVIDIA GeForce GT 240M   (8652)
PosCode : LS1(83) 0:0:0 2/0 [577]

Failed to enter Can't find MaskTexture in file 'MaskTexture BG_Effect_T.belis_dungeon_15_eff': (null)

History: UGameEngine::Init <- InitEngine