Im having the exact same problem. Do you have to original game or another version?

My brother bought the game yesterday, and we tried the no-cd with no luck. That makes sense though, the game installation only puts very few files on the hdd, and reads most of it from the cd during gameplay, so a fixed exe couldnt possibly work WITHOUT the cd.

This no-cd must be for another version of the game, then the original game-cd. The read-me also says make a "full installation". There is no such option when installing from the original game-cd.

What do you think?