Detailed description: When joining a multiplayer campaign hosted by a steam friend and invited to a game, it showes the error roughly translated to (different versions).
- start a multiplayer campaign
- set name and password
- invite friend through steam
Details of any solutions that have already been attempted: We checked our build to make sure it's the same, used the same language as well (if it matters)
Please attach .replay for Battles or both .save_multiplayers from host and client for Campaign.