--->UPDATE<--- Aperture Exporter is now compatible with MacOS 10.14 Mojave.  You can get the newest version (1.4.0) here right now and is available for purchase directly from us.  We are unsure of when we will return to the Mac App Store.

 

Aperture 3: Troubleshooting Basics

If Aperture 3 isn't starting up properly or performing normally, try these basic steps to troubleshoot the situation. Please note that these steps aren't exhaustive and are not intended to cover any specific issue. These are fundamental, basic steps for getting Aperture into good working order, and are the steps most often suggested by AppleCare Technical Support.

http://support.apple.com/kb/HT3805?viewlocale=en_US&locale=en_US