Clicking "Upgrade" on the Launcher seems to be working here. Launcher seemed frozen for about 5 minutes, but I checked "Wi-Fi" in "Performance" tab of Task Manager:
and I could see a data coming through, so I let it be. Then the Launcher screen showed "Sync Files" for a while:
and then I got "Play" button back in Launcher:
despite this ominous message ^^^^^^^^^^^^^
Clicked "Play" and Odyssey kicked off with:
which lasted while...
and then....
into open play... and...
So I guess my only counsel is patience. Sorry for the long post--I half expected a crash, in which case the screen shots might have been more helpful. But if you're really stuck this probably won't help.
I purchased from Steam, btw.
Thanks, Frontier crew! You do a great job. Let's keep ED around for another 40 years!
07 commanders. Good luck and see you in the black.