I have an iPhoto library of about 2100 photos. It's iPhoto 11, v9.4.1 (701.67).
At some point I imported some photo's from memory stick and played around with the 'store photos in library' vs. 'link to existing photos'. Whatever was the cause, now every time I open iPhoto I get several messages telling me photos are missing and whether I can find them. I tediously selected some of them one by one (why isn't iPhoto smart enough to look for the others in the folder I just selected?? :/ ) but some I still cannot find.
I'd rather now remove them from my library, but every time I try to select a missing picture for deletion iPhoto freezes and I have to force-quit.
I tried the repair options with Cmd+Option, but those don't seem to help and the thumbnails rebuild will just ask me for the source of 100s of photos so I just cancelled that.
I also tried the script in: http://philatwarrimoo.blogspot.nl/2010/06/iphoto-script-to-remove-missing-photos.html but after some time iPhoto freezes again and the script times out.