Please let me know if that didn't work, so we can continue troubleshooting.
I did the rebuilding process as you described but it still looks exactly as it did before. I have time machine but when I go to yesterday's back up (or anything prior to today) it all looks the same - ie. the photo information seems to be there but I can't see any of the photos. What should I do? Thanks.
There is no originals or masters folder but there is a data folder which has more folders years, then further folders of exact dates but all of these folders are empty :(
I have gone back with time machine to the 8th of March 2013 and am restoring a copy of iPhoto library onto my external hard drive. I tried just placing it on the desktop but there wasn't enough space. It is 112GB! and says it will take about an hour to copy. Do you think this will be all my photo's? And my question now is - how do I get iPhoto back up and running so I can use it as before- to import, manage/edit, collate albums etc?
It is still copying the library from the 8th of March onto the external hard drive - it's done 17GB - so 95GB to go. there are over 17,000 photo's from over 10years. I have backed everything up until September last year and in fact - I just checked my camera and I have the photo's from September still there so I won't have lost anything if this doesn't work but I still need iPhoto to work. Once it is done I will do as you say and re-open iPhoto and select choose library using the copied library from the 8th March. i will stay online and let you know how it goes.