Current trainer seems to be working fine over game version (2.4.0 - 19728) however most likely a trainer would be developed to new engine source which for those whom complained about viruses, it's still false positive and make sure to download only from here.
As for random crashes, i recommend using with mods disabled just in case if you do, but still could someone point out exactly which cheat cause or how exactly you manage to reproduce and share save game file to nearest point of the crash? (that would be much easier to check it out since i played more than 20h and haven't encounter any crash so far).