You may have trouble launching versions 11 and 12 of Photoshop Elements purchased from the Mac App Store. The following message is displayed when the launch error occurs:
This issue occurs because of the expired security certificate used by Apple to verify applications bought from the Mac App Store.
To resolve the issue:
- Uninstall Adobe Photoshop Elements.
- Log out of the Mac App Store.
- Empty Trash.
- Restart your computer.
- Log back in to the Mac App Store.
- Re-install the Adobe Photoshop Elements application.
Note: If the following message is displayed when launching Photoshop Elements 13 bought from the Mac App Store:
“Please do not launch this application from within the
application package. Instead, please launch from your Applications folder”,