I got the same problem. Game crashes to desktop if the trainer is enabled. I have the MULTI9 release by PROPHET, which is aparently v1.1. I tried copying the MULTI6 v1.0 no-cd by RELOADED from GC World, but the game wouldn't launch at all after that. I've uploaded the GC World MULTI9 PROPHET no-cd files here:Link. Hopefully you can do something with them.
By the way, this is the first time I've had any problems with a trainer from here. This is by far the best site on net for trainers. PWizard, Caliber and everyone else involved: You are my heroes!!