Hello, there!
I have a mod, Historical Battles sorted by date, not DLC. If I activate it, it won’t let me play multiplayer, except for the people who also have the mod activated.
I understand that adding Campaign mods to the list of mods that both players should have is a must, as someone could have a different file for COOP scenarios. However, my mod is just a GUI file, not an scenario file.
Could this be prevented?