In game version 1.68(.140.908), I am experiencing semi-consistent client crashes during mission loading on multiplayer servers.
I often experience an instant crash on mission selection when client-hosting a server, and when logged in as admin on a dedicated server. Sometimes this does not occur and the mission iniates flawlessly, but if another player joins the mission in progress they will often crash after selecting a slot in the lobby and starting to load, most commonly around the "receiving mission file" phase.
I have reproduced these crashes along with other players, with and without the latest performance binary, with and without addons loaded, with and without any launch parameters, on both a client-hosted and a dedicated server, with different missions and mission files & settings (description.ext, init.sqf etc). Along with the report files I have included a sample mission that I have been able to reproduce the crash with.