The application crashes if you don't give the right path at first startup. It may have something to do with the fact that I selected the folder of the first Rocksmith, because I was unsure if this is for RS2014 only, and just wanted to take a quick look at it. If you restart it don't ask for the path again and just throw the exception. Even an uninstall did not help as this won't delete you settings, so I can't correct the path. Edit: I found the settings.xml, deleting it of course "solves" it.