Game crash as soon as I try to host a multiplayer game

[Tavish 41]

Glad to hear it. :)

However, my issues aren't fully solved. Nobody can join my games, unless I do some funky dark magic with my router. A really horrible workaround just to play a bit of Arma Coop...

There's an issue that's been lingering since June/July on the feedback tracker to do with hosting/joining local MP games and BIS don't seem to have a fix yet (even though they've "fixed it" several times in the past few months).

This sucks.