Something must be Blocking it, Check your AV settings.
Uhhh... they're not supposed to work online. They don't make hacks for multiplayer, which is pretty frickin' explictly stated here. It should work offline, and that's the only metric that matters.
Run the trainer as admin.
Yeah already tried that one, that was my first guess. I also tried clearing the cache folders through the trainer manager program. It's a bizzare problem that does not appear on any of my other trainers.
..... Never mind.... I just found out what it was. It was my antivirus... which was letting every other trainer through fine, but it was silently blocking this one, and not sending me a notification for it (and oh they're on.)
So freaking irritating, i'm glad i got it figured out this afternoon i was pounding my face on my desk for like 2 hours last night.... but because there wasn't a notification when I ran the trainer that a problem had been detected, it didn't cross my mind.