It won't even start. The demo did.

[ShnitzelKiller]

According to that log file everything works... strange. Perhaps it is the demo log file and that the normal Penumbra does not create one. Try removing it and then starting the game and see if a new one is created.

Maybe you're right... the full version doesn't technically open, it just bounces up and down in the dock trying to start up. Perhaps it would create a log file if it managed to start. I removed the hpl.log and a new one was not created, so it must have been from the demo. Is there some way to figure out what is causing it not to work? I did give you the .crash file.

I erased the demo, but could it be i didn't uninstall it properly?

EDIT: the demo still works, btw.