I have run into various issues with Aperture and always end up searching for ways to clean up the Aperture Library. I have started trying to keep smaller libraries in an effort to reduce the amount of time it takes to work in the app.
Repairing the Aperture Library
- Start Aperture by while holding the Option and Command keys
- The Aperture Library First Aid dialog will appear and offer the following three troubleshooting options:
If your library isn’t accessing images that you know are there and that you know are connected, or even if your library simply won’t open, this could be the fix you’re looking for. File permissions (basically defined as who or what app has the right to read or write to certain files) can sometimes be incorrectly defined, and this will correct that.
Any other problem you’re having with the library is addressed here. I realize that’s a big open statement, but essentially, if you have any oddities in your Aperture library, this is the first thing to try. If you called tech support—this is the first thing they’d tell you to do. Think of it like rebooting your computer. Sometimes you just need to.
If the Repair doesn’t do the job, then try a full Rebuild. This will take considerably more time, so don’t try this first. But if the Repair doesn’t fix it, try a Rebuild.
Sometimes it helps to just delete the Aperture preferences file
Deleting this file will reset all of Aperture’s preferences, you may want to review and note any special settings you had before deleting it.
- Quit Aperture.
- Choose “Go to the folder” from the Go menu in the Finder.
- Type ~/Library/Preferences in the field. Press the Go button.
- Remove the “com.apple.Aperture.plist” file from the Preferences folder.
Most of these notes are similar to what is posted on Apple and the Aperture Expert site