I uninstalled Armageddon, then installed it again and the message " install latest milestone" appears. Starting Doomsday this stamp shows: 1.3 GCYY
I´m still at a loss why , earlier in this thread, it was stressed that it was to be installed in a seperate folder. And that even seemed to work for some people.
Armageddon that comes with Anthology is a stand-alone. Which means that it doesn´t need Doomsday.
Armageddon that is bought from GamersGate is not a stand-alone. That version needs to be installed on top of Doomsday.