Maybe you can try to leave your security software enabled, have a folder in which you store your trainers, exclude this folder from any scans, move the downloaded zip file into this folder, extract it and launch it there?
The trainer is fine.
I hadn't heard about the issues with DMC1. But still, the game works like a dream as long as I don't activate the trainer. The literal second I hit F1 to activate while in-game (or if I go in-game after activating at the main menu), the game will crash to desktop without fail. So regardless of DMC1's own issues, I think this one really is trainer related.
So hopefully the new version will work better. Thanks for the quick follow-up, guys!
I enabled my security software, added exceptions for the folders, and tried to launch it from there. It didn't make a difference. I also tried through the Trainer Manager.
The trainer gets as far as showing the CheatHappens start up logo, and then it closes out without launching the trainer itself. I deleted it and redownloaded it about 3 times, and I still can't get it to work.
Alternatively, I'd just downloaded the new FFXV trainer, and it boots up just fine.