OK, Verena and I figured out what was wrong.
It’s the directory names. If the directory name is too long, it causes the game to crash. Install it to “Program Files\Phenomenon 32” and it crashes. “Program Files\Ph32” is fine. Probably something to do with its saving and loading of files. So now I just have to alter the installer and make sure everything works.
God, this was insane. Sky Cat is having way too much fun with me.