I found a trainer that actually works decently in the meantime, albeit I'm only using the 'freeze timer' and 'no penalty' option. So I can't say if all of the other options do work, but it's better than nothing. The trainer AND the game works flawlessly with each other. No crash after 2-4 hours of playing. Even longer in total.
It's called MT-X, Mega Trainer - eXperience. Google it.
I have 18.104.22.168 steam version running on 32b win 7. The problem is that promo trainer with 1 bounty add option is working fine but when i downloaded the original version with all options game is crashing to desktop. (i tried all from troubleshooting section and more).