I can confirm this has bricked my game as well. Just a black screen once I edit the EXP. Can't play the game anymore as I've tried to uninstall and reinstall. AV off, etc.
I would advise contacting the trainer maker in regards to this.
@Azulfo as well.
As once you have uninstalled the game and reinstalled it the game should start fine as their is no remains of the old game files or changes made.