Getting the Upgrade to Load/Work

So I purchased the base upgrade from FotoMagico 4 to 5, and it tells me that I now can get the upgrade to FM Pro, but when I click the button, nothing happens.

What have I missed? Thank you for upgrading! With the “base upgrade” you mean the product on the Mac App Store? Do I understand correctly that pressing the “Upgrade” button in the Mac App Store version doesn’t work?

That is correct.

And this time it worked. Thank you for the magic!