Sounds like something related to an Antivirus software or another type of similar conflict.
Where does this error show up, and at what point?
Eg. in the trainer itself, a dialogue window after launching the trainer, the game window, etc.
Double check to make sure the default AV (Windows Defender) is still deactivated. Windows likes to "fix" problems automatically without notifying the user, so perhaps it has been reactivated. Alternatively, if using another AV, firewall, or other security solution, ensure the appropriate exceptions have been added.
Aside from that, running the trainer as Administrator, is the only thing I'd suggest. The "CreateFile" part of the error message suggests a permissions issue. Something with either the trainer, the directory the trainer is inside or accessing, or another program was stopped by some outside influence. I'm not sure what though.
same issue here. Are you working on a fix for this?
It seems they added the feature but when I try using the option it gives out an error when I try to activate it, trainer seems to work fine besides that feature though.