Hi BeSweet, I have the same problem as you do.
The trainer worked fine last couple of days, and then suddenly stopped working properly. Sometimes it's still working, but not on races and so. I didn't modify anything.
Only option that's seem working is F7, the police won't chase you.
Try running it as administrator if you have Vista, but it isn't helping too much.
If anyone knows how to solve this I'll be grateful, maybe redownloading? I doubt.
I'm running XP. I had a Windows 7 x64 install but the trainer isn't supported on x64 machines, so I spent a while install XP (god forbid) on it. It definitely worked perfectly before, but now it's being stupid .
The last time it worked was on Saturday when I made this video: www.youtube.com/watch?v=uVpKcueTRaQ
Hopefully somebody knows how to fix this. I doubt this trainer will be updated or anything like that .