In the meanwhile I suceeded in finding a clue to my problem. It's one of the buildings, I think. I had to reinstall the game to get that damn original building-file, but after replacing it, the game did not crash (You see, It's clever to backup your files).

But that's weird... I thought the game would read the whole script in the beginning.

However, the scripts are a nice idea. I read that thread in parts and it's very interesting. Regrettably I don't know how to run it, but I will ask in that thread.

Thank's for your help.