I responded to your post. But due to not really having much information to go with. I was unable to recreate your problem.
Can you please answer these questions.
1. Which trainer are you using?
2. Operating system?
3. What platform is the game runing on, (Origin or Steam)?
4. Are you runing the trainer and the platform in Admin mode?
5. What security programs are you runing on your system?
ok so The 2 trainers I am having issues with are
HITMAN: ABSOLUTION TRAINER 1.0.447.0
ASSASSINĀ“S CREED III TRAINER 1.06
I am running windows 7 Home Premium with Service Pack 1.
I play all my games on steam. However the steam versions of the assassins creed games will also download uplay and play through that.
Yes I have set administration rights to all trainers and games.
And I am currently using McAfee. All trainers and games have been set to have always allowed rights through the firewall.
Now to give some extra info.
The hitman trainer works to a degree but whenever I reach a cinematic at the end of a current section of a stage the trainer causes the game to crash.
The AC3 trainer I can activate but it will immediately cause a crash when activating any of the cheats.
And thank you for the help.