Just did this: copied all left in iPhoto to folder, zeroed out iPhoto. There are now 0 items in iPhoto, and it opens to a blank screen. I followed your instructions to boot, checked all boxes, and let the app run the selections. After that was over, it launched itself to 0 files, and took 20.5 seconds to load nothing. Same as it was before. I quit and relaunched three or four times, still get same result. Three second pause, 20.5 seconds of a spinning beach ball, then OK. Next, I am going to try your recommended download to manage library. Maybe I should have at least one photo in the library? What do you think? My thoughts are the program was looking for something it's not finding, and that search times out and it finally moved on. This may be what's happening, this string from Console:
12/21/13 9:50:41.898 AM Console[619]: Marker - Dec 21, 2013 9:50:41 AM
12/21/13 9:51:16.503 AM iPhoto[628]: This process is attempting to exclude an item from Time Machine by path without administrator privileges. This is not supported.
12/21/13 9:51:16.503 AM iPhoto[628]: This process is attempting to exclude an item from Time Machine by path without administrator privileges. This is not supported.
12/21/13 9:51:16.504 AM iPhoto[628]: This process is attempting to exclude an item from Time Machine by path without administrator privileges. This is not supported.
12/21/13 9:51:16.504 AM iPhoto[628]: This process is attempting to exclude an item from Time Machine by path without administrator privileges. This is not supported.
12/21/13 9:51:16.622 AM iPhoto[628]: CFURLGetFSRef was passed this URL which has no scheme (the URL may not work with other CFURL routines): /Applications/iPhoto.app
12/21/13 9:51:16.624 AM iPhoto[628]: CFURLGetFSRef was passed this URL which has no scheme (the URL may not work with other CFURL routines): /Applications/iPhoto.app
12/21/13 9:51:16.625 AM iPhoto[628]: CFURLGetFSRef was passed this URL which has no scheme (the URL may not work with other CFURL routines): /Applications/iPhoto.app
12/21/13 9:51:16.628 AM iPhoto[628]: CFURLGetFSRef was passed this URL which has no scheme (the URL may not work with other CFURL routines): /Applications/iPhoto.app
I do not have Time Machine activated, it is turned off in preferences. I use CCC for my backups, and only have the external drive on while I'm backing up.