Hi! I just purchased the new DLC and installed it through GoG Galaxy, but I found that the game will not launch.

When I press the play button, it greys out as if it's starting a process, but nothing ever happens.
There's nothing started according to windows task manager either. It just greys out the checkbox and nothing more.
I've verified/repaired the installation with no success.

Edit: It will not start without GoG Galaxy either, but at least there's a process visible in task manager that isn't doing anything.

It seems that this DLC is locked.
That's weird. I do have the season pass and the other DLC are working fine.
I really wonder what to do ....

No I didi not.
In fact from the beginning the season keypass has always been locked.
An I don't know how to unlock it in GOG GAlaxy

Click on the settings icon from where you would launch the game, manage installation, then configure.

So I just reinstalled both Frostpunk and GOG Galaxy, still nothing is launching.
When I launch the game manually it's stuck with a process that use 0 - 0.1% of my processor and 40-55mb of ram, forever.

Thank you. It helped.
P.S. For readers. If you cant check DLC in settings then you mast close game try again.