TS2551: iPhoto '09 & iPhoto '11: Updating may disable some third-party plug-insLearn about iPhoto '09 & iPhoto '11: Updating may disable some third-party plug-ins
Currently Being ModeratedApr 27, 2013 8:11 PM (in response to duvelw)
that indicates that the iPhoto database has lost the connection between the thumbnail and the photo - if you have not been deleting photos for yoru library using the finder then Back up your iPhoto library, Depress and hold the option (alt) and command keys and launch iPhoto - rebuild your iPhoto library
It is good to note what version of iPhoto and of the OS yo have also
Currently Being ModeratedApr 28, 2013 10:46 AM (in response to duvelw)
Apply the two fixes below in order as needed:
Launch iPhoto with the Command+Option keys held down and rebuild the library.
Since only one option can be run at a time start with Option #3, followed by #4 and then #1 as needed.
Using iPhoto Library Manager to Rebuild Your iPhoto Library
1 - download iPhoto Library Manager and launch.
2 - click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
3 - Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option.
4 - In the next window name the new library and select the location you want it to be placed.
5 - Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments. However, books, calendars, cards and slideshows will be lost. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.