Issue when creating a mutliplayer game Compilation Error

[symboreka]

Hello Community,

I'm having some trouble setting up a TM2 Stadium game for me and some friends via the ingame option.

After pressing the "Create" button ingame, selecting the "StadiumA" maps and then clicking "Next" this appears:
(image also in the attachments)

It says compilation error on CampaignBase.

After hitting escape, i am in a weird spectator mode, playing is not possible.

I purchased the game via Steam and already tried validating the game files and reinstalling the game.

What can I do to fix this?
How can I select maps to play with my friends in multiplayer without paying money for a dedicated server?

[Shebmania]

Hello,

I have the same issue when creating a multiplayer game on Trackmania 2 Valley.
Do you have an idea to resolve this problem ?