Need help on a trainer

[itsokman]

Hello
I tried to make maphack trainer for warcraft like game for a client that has anticheat protection.
The trainer I made works fine on single players, other clients without protections, ip games and so on. It even runs on the anticheat client and it goes till chat window. However when the actual game starts, the game crashes.
I am sure its not caused by anticheat because it would have give an instant ban instead of crashing the game. I am saying that because when I was trying to make that trainer I got few bans on the way.
Can anyone guide me a bit?