Hmm...Well, I suppose the next question is what happens when you install the game without my patch? All your specs are fine and it seems everything was installed correctly. Since it was a 1.0 CD that means that A was the correct version and there should not have been a patch000.dat file in the folder. Never heard of a problem like this before so we'll see what we can do. P.S. We care over here at NMA and thus we like to be punctual in our replies. EDIT: When you say "replace" I assume just copy over and overwrite. Not physically remove and then copy over the new files. Is there a "worldmap.dat" in your Fallout2\data folder?