Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Choose to Repair Database. If that doesn't help, then try again, this time using Rebuild Database.
If that fails:
Download iPhoto Library Manager and use its rebuild function. (In Library Manager it's the FIle -> Rebuild command)
This will create an entirely new library. It will then copy (or try to) your photos and all the associated metadata and versions to this new Library, and arrange it as close as it can to what you had in the damaged Library. It does this based on information it finds in the iPhoto sharing mechanism - but that means that things not shared won't be there, so no slideshows, books or calendars, for instance - but it should get all your events, albums and keywords, faces and places back.
Because this process creates an entirely new library and leaves your old one untouched, it is non-destructive, and if you're not happy with the results you can simply return to your old one.
Dear Old Toad
This did not work. I held down these keys before lauching iPhoto and for 5 minutes afterwards to no avail. When I place my left click cursor on iPhoto in the dock then I see Options (a check before Keep in Dock, Open at Login, Show in Finder), Show all windows, Show, Force Quit all highlighted.
Within the menu balk from iPhoto the following are highlighted: Services - Hide iPhoto, Hide others, File - Reveal in Finder (none further), Edit - Font, Spelling (none further), Special Characters, Photo - My rating (none further).
Perhaps, this can further help your with suggestions for me. I do hope so!
I have got my iPhoto 11 into the same state as deniseBE. Oh and this affects Photo Booth as well... aparently they are connected some how
I have tried a few other things to attempt to get iPhoto to open, however to no avail. I tried launching iPhoto using the command key click and creating anew library, this did not work. So I renamed the iPhoto library file (adding .old) that may be corrupt, iPhoto could not find the file (as desired) and attempted to create a new one, this seemd to work, as iPhoto would begin increasing its memory usage, however it would then go "not responding" and no new library file was created.
I looked in the /Macontosh HD/Library/Preferences for anything iPhoto related and could not find any file. I preformed a full disk search for iPhoto files and could not find a "com.apple.iPhoto.plist" referenced in this thread (https://discussions.apple.com/thread/2433453). I suspect the new versions of iPhoto are using some other data file reference outside of the library file, which as a reference to it thus causing issues during the application load. I've sent off each non responsive force quit to apple in hopes it will be analized and a fix can be found.
I've also downloaded iPhoto Library Manager however opening it causes it to go non responsive after a few seconds. Some part of it does appear to still be running as the used memory continues to increase... either that or it has a memory leak.
So, after I've renamed the potentially corrupt iPhoto Library, and relaunch the iPhoto Library Manger it now does not hang, and I was able to create a new iPhoto Library... the file now exists in finder... and when I try to view it in either iPhoto or iPhoto Library Manger, it causes both applications to hang.
Is there any sure fire way to uninstall iPhoto? (it would be nice to keep the data library file but not a required) I want to make sure I remove ALL of the config files, references etc. in hopes that a reinstall will restore basic opperations so I can try and repair the potentially corrupt library file.