iPhoto crashing
My iPhoto Version 8.1.2 has crashed twice now on my Macbook OS X Version 10.7.5. I receive the error message, "Your photo library is either in use by another application or has become unreadable. Shut down and restart your computer and then reopen 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. i've now lost my photos twice. I followed these instructions but they didn't seem to solve the problem.
MacBook Pro