Did the game get sneak patched?
I just tried to use the trainer right now, and it crashed the Game. I repeated 4-5 times, with various compatibility settings and administrator rights.
It was working perfectly fine this morning.
My guess would be "yes"
Same thing is happening to me as well...
Load the trainer,and I crash. Don't load, and all is well.... Load the trainer and crash....
But things are pretty quick around here, wait a day or two and a new trainer will be out.