Myself (the host) had been dabbling in mods and wanted to try them on a previous save with my friend. After much trial and error, we made sure we had the same mods, same game versions, same mod versions, same load order, same script extender version... but still, when the client tries to connect, it errors them out stating that our versions are different.

Guess what? Even after disabling ALL mods and trying to start a new game, same error. I now cannot connect to ANYONE. No matter what I try. I am uninstalling every mod, game file, and the game itself to fix the problem. No mods or anything.

Any ideas why this might be happening? Is there something I'm missing? Is this game's mod system just borked?