Also when you first install, if it is not SP1, you need to apply SP1 first way before you run the program. If you put in the original, run the program then put the patch in, it will crash or act really weird. You need to put the program in, install SP1 then use the program.
Also what kind of computer do you have? The specs are helpful when troubleshooting problems. The crashing could be related to your video card or something else that's happening with your computer and not necessarily related to the program its self.
John