We are currently aware of one lockout bug.  If you beat all levels with a 5 star rating or better (yes there is better), the game will not let you launch it again.  This is due to an error on my part that is trying to set an achievement before I should.  The fix is done and the update submitted.  Once you update everything will go back to normal and no data will be lost.  If you can't wait for the update then you can delete and reinstall - just be aware you'll lose your unlock data :(