Aperture locks up
While Aperture was building thumbnails, my Macbook shut off. When I restarted and opened Aperture, it locked up and I had to force it close. Aperture continued to lock up even after I restarted my Macbook. I put Aperture into the Trash and emptied the Trash. I then reloaded Aperture but it still locked up. I moved Aperture to the Trash again, searched to make sure that there weren't any files attached to it - other than my Library - and then reloaded the software a third time. It still locks up - AAARRRRGGGGGHHHHH! Any suggestions? I have never had any issues with this program before.
Thanks for any help that you can provide.
Aperture 2, Mac OS X (10.6.8)