I realize this is an older game, so most folks aren't interested. However, after I posted questions regarding the trainer customizer, I think I figured out how to use it.
Yesterday, after I believe I got it working, I was able to play the game and use the trainer with no issues. Today, I log in (through Steam)start the trainer and the game, and now the trainer causes the game to "lock up". For instance, I was enabling the weak target feature, which worked, but once it did, my mouse stopped working all together. Ended up deleting everything then reloading the game thinking perhaps when I attempted to use the customizer, I somehow managed to mess with game parameters. However, after I reloaded the game and played a few minutes, everything appeared ok. So I restarted the trainer without customizing any keys thinking perhaps this is what caused the issue. Nope, same exact problem. I can't imagine this particular problem is a windows 10 issue, as I've had Win10 now for nearly a year and have no problems with it at all. For instance, I also run Fallout 4 and Witcher 3 with trainers and don't have any problem. If anyone reads this, I could certainly use some assistance here. There is no way of contacting anyone in charge on this site without submitting a "request" which I don't believe this warrants. This game and these trainers have been around for some time.