@arma473 Well, turns out that didn't work at all. Friend decided he wasn't interested in playing the game after about two hours of trying to troubleshoot. Ah well, I'll keep looking into potential solutions for later reference, though.

@arma473 I'll give the suggestions in that thread a try and see how it goes.

I introduced a friend of mine to FAF today and the experience has been...less than smooth. Ran into some issues where the client kept kicking him out of the lobby because he didn't have some of the mods and it wouldn't download them.

We worked around that, but ran into a much more pressing issue; every attempt to play co-op missions ends with an unhandled exception about 10-20 minutes into the game. Happened every time without fail, and we have no idea what's causing it. It is entirely happening on his end, and I've been the host each time since I was more familiar with the client and game. I've never had any issues with the game while playing solo and still don't - tested it after my friend gave up in frustration for the day. Attached are the error message and the game log.

His setup is an RTX 3060, and an AMD Ryzen 9 5900X 12-Core Processor. Has 64GB of RAM installed, if that matters.

game_21313432.log
message.txt