The story: I download iTunes 8 after getting home from school, set up Genius, mess with it for a bit. It works fine. Half hour later I leave for work. Come home later, set up Genius again, but with a different library. (Macbook Pro, so a remote and a local library; I use Libra for library management.) Now: iTunes will just fine with the remote library. When using my local however, I get "The iTunes application could not be opened. An unknown error occurred (13026)." Google yields nothing but a thread on Apple support with nothing overly helpful.