maybe this helps from the README If you try to run Return to Castle Wolfenstein and receive the error message, "Couldn't Load default.cfg", the game is basically telling you that it cannot find the main directory that is part of Return To Castle Wolfenstein. This error commonly occurs when the game is installed with no directory specified. For example, if you choose to install it to a hard drive or partition other than the C: drive (that is, D:,E:, etc.), but fail to specify a folder, the game will install everything to the root of the hard drive and the game will not launch. If you want to install the game to a hard drive other than the default setting (C:), please make sure you specify a folder when choosing the other drive (i.e.: D:RTCW). -------------------------------------------------------------- if that dont help try changing your desktop to 16bit colors or updating your graphics card drivers only things i can think of6349 "files in pk3 files execing default.cfg couldn't exec language.cfg couldn't exec wolfconfig.cfg execing autoexec.cfg " sounds like the bit i posted from the readme should help u