iPhoto 9.4.3 all edits lost
I hope someone can advise on this. This weekend I upgraded my OS from 10.7 to 10.8 and updated iPhoto to 9.4.3. I now find that ALL my edits have been lost - thousands of photos going back more than 10 years - all crops, rotations, colour correction, everything. All photos show as they were originally imported. I remember that when updating, a message appeared to the effect that several issues were discovered, and the installation process took a very long time. Another strange thing - If I take the file name of a picture (e.g. IMG_008) and do a search for it (to check if any other versions exist) - the search finds no results. If however I drag a photo to the desktop and do another search, it finds one result - on the desktop). There is one glimmer of hope - I have a Time Machine back-up disk which was last connected about 6 weeks ago (when I was still on 10.6.8). The number of pictures I have edited over the past 6 weeks is negligible, so would be happy to lose these. I'd be quite happy to ditch the whole upgrade and go back to the previous version if it restored the edits. Which way should I proceed? Thanks
iMac, Mac OS X (10.7.5)