Error Messages While Copying/Merging

If you receive an error message from iPhoto Library Manager when trying to copy albums or merge libraries:

Make sure you are running the most recent version of iPhoto Library Manager. This is especially important if you have recently updated iPhoto, as this can sometimes require a compatibility update for iPhoto Library Manager. You can select the "Check For Updates..." menu item from the "iPhoto Library Manager" menu to see if there is an update available to download.
If you have installed a newer version of iPhoto over an older version (especially over version 2.0), try deleting iPhoto and reinstalling it from your iLife installer disc. (see more info about this here.)

There is one specific error message that will read something like "Element cache has 52 items, value has 53 items". This error is usually caused by a small corruption in iPhoto's library database, and can often be cured by simply rebuilding the library database.

If you are still experiencing errors, then contact support@fatcatsoftware.com for further assistance. Please include in your message the version of iPhoto you are using, the version of OS X installed on your computer, and what model of Mac you're using.