help here is the error in KF(killing floor) what to do (Killing Floor)

Build UT2004_Build_[2004-11-11_10.48]

OS: Windows XP 5.1 (Build: 2600)
CPU: GenuineIntel PentiumPro-class processor @ 1996 MHz with 2046MB RAM
Video: No Video

Object not found 'ini:Engine.Engine.GameEngine' in the configuration file

History: UObject::SafeLoadError