Pictures in iPhoto unavailable
When in iPhoto, the thumbnails of some events and pictures keep disapearing. When I try to view these photos, there's an unavailable sign, but the preview on the lower bar still shows. I can't find them in the iPhoto Library. Here's what's happening:
The thumbnails of the events don't appear.
When I go to an event the thumbnails of the pictures don't appear as well.
When I open a photo, this is what I see, even though the photo's preview is down there.
What's happening? What can I do? Are the photos gone forever?
MacBook Pro (13-inch Mid 2010), Mac OS X (10.6.8), iPhoto 11, version 9.2.3