Quote Originally Posted by Zz-Jones View Post
The app tells me that I should install the update and then sends me to the app store, but there is no update offered but I can only click on "open". but it does not open, the progress bar goes up to about 1/3 and then nothing happens anymore
Ah I see now. For this, please try completely closing the App Store and then reopening. You should then see Update as an option as opposed to Open.