IPhoto 9.2.1 empty screen with spinning wheel

Question

Hello,
I got a problem. I am using iPhoto Library Manager, because I use multiple libraries and the problem occurs only, when I open old 8.1.2 libraries in iPhoto 9.2.1. The conversion starts and ends - I see the whole library, but after closing iPhoto and then reopen a converted library I will get this application window:
I can close iPhoto, but I could not get to any state to see any menue on the left or any event or album information, nor any image in the black. The spinning wheel runs endless, doing nothing.
I tried to remove the preferences - won't work
I tried to rebuild the Library (start iPhoto with options+comand key pressed) as well as using the iPhotoLibraryManager function to rebuild. No change
I repaired the permissions - no change at all.
In iPhoto Library Manager I will get a error after library rebuild process:
Rebuild library is empty and useless.
It only happens to converted libraries. If I open old libraries in iPhoto 8.1.2 they do fine and work, the problem only happens after converting the libraries to the iLife'11 database format and reopen it. After the first convertion process all looks quite nice and well, but after closing iPhoto and reopen iPhoto with the converted library this error occurs.
I found, that within the iPhoto Library a folder masters is present, it contains the photos. When I open iPhoto with a new library - which works fine - and import the pictures from this master folder, this new build library will do fine and reopen without any problem - but all albums, facebook shares, photo descriptions and ratings are lost.
Also in this master folder several other folders were present, showing small images of other photos fram various other libraries, mainly those I shared on facebook.
If the screen with the spinning wheel shows, I click to the modify or edit button at the bottom right of the iPhoto window and iPhoto shuts abnormal - crash report is send to apple.
I have the problem with now three libraries and it would not be worse if I would have this error once and it would appear imediately, but it appears only on reopen after a convertion process - so I found it out as it was to late.
Any help? Any advice?

Answer 1

Create a new account (systempreferences -> accounts or Users & Groups on 10.7)  and see if the problem is repeated there. If it is, then a re-install of the app might be indicated. If it's not, then it's likely the app is okay and the problem is something in the main account.
Regards
TD