I always look at readme file and all treads about trainer, The fact of the matter is your trainer doesn't work with new patch to will.
Maybe you should test it a little more before releasing it,
Also trainer before this one, I had no problem with game, didn't have to hit F7 or have random game crashes,
Note that if it works on their systems then it works. If it does not work on your system. Then there is something on your system or in your game causing it to fail.
This could be from AV all the way to any mods or exe cracks. Also even aplha or beta patches.