Ok, I' ll create the 'maps' folder manually, again. There is no 'xdata' folder... Where should I create this folder? ------------------- Edit: Ok, excuse me I didn' t read carefully. I try it... ------------------- Edit2: Ok, I checked everything. 'Maps' -and 'xdata' folder are there, created manually! And the Game-settings are: Select a Game: Doom 3 Engine Path: C:/Program Files (x86)/Doom 3 Mod (fs_game): darkmod Mod Base (fs_game_base, optional): (none) The error is still there.