Other people have gotten the trainer to work thus it is not a global issue or an issue with the trainer. Since you have neglected to post any detailed troubleshooting information that can help us reproduce the problem on our end, we cannot assist you in anyway.
all the trainer does at F1 is inject trainer code into the game space. there is no good reason for the game to crash since no game code has been modified. maybe something on your end is detecting injections and closing programs. i have no good answer for your problem, since the trainer isn't really 'doing much' when you activate..
also, make sure you are downloading an authentic cheathappens trainer FROM THIS SITE. otherwise, it might not be functioning properly..