iPhoto library unreadable or in use by another application
None of my photos will appear when I open my iPhoto library. Keep getting the message below.
"Your photo library is either in use by another application or has become unreadable"
"Shut down and restart your computer, and then open iPhoto again. If the problem persists, try rebuilding your photo library. To do this, quit iPhoto, and then reopen it while keeping the Option and Command keys pressed. You can also try restoring your photo library from a backup."
Restored my library from time machine and still got the same message.
MacBook Pro (13-inch Mid 2010), OS X Mountain Lion (10.8.2)