Just FYI - I had been having problems with xBox music throwing errors when downloading music and my photos app kept crashing. After digging into it, I found my problem. When I got my SP2, I set it up with a different machine name than I used on my SP1. When I logged in with my Microsoft account, it transferred a lot of my settings - including library paths - for the default and public save locations. These locations referenced the old machine name and hence were not available. Deleting those old library locations and recreating them fixed my problems. If your having issues, you might want to check out your libraries.