Alright, so I accidentally installed two versions of shapeshifter at the same time, and now no application will launch. Whenever I try to open anything like Camino, Itunes, System prefs, it just crashes immediately. Whenever I try to open a document or some file, it just doesn't open. I double click it, but nothing happens. Is there some way I can get out of this pickle? By the way, I'm posting this on my sister's computer.