It seems Apple has finally fixed the problem with launching apps purchased on the Mac App Store.
If you are still having difficulties using our applications purchased in the Mac App Store, please try the following:
- Quit the App Store application.
- Delete our application from your Mac and empty Trash.
- Open App Store, click on Purchased tab and install our application again.
We would appreciate if you can leave us a note here if this did help you to solve the problem.