Multiplayer Problem

[Xeresbos]

Hello all, first of all thank you for helps...

I played at windows very well. No problem on that but after a while I had to leave the game. I'm back but I'm at Mac now. Single players is working fine but multiplayer isn't work. When I try to join a server, I'm taking this error:

http://steamcommunity.com/sharedfiles/filedetails/?id=920385178

I'm turning auto download to on, this time I got this one:

http://steamcommunity.com/sharedfiles/filedetails/?id=1083772341

I don't know what to do, if anyone has some ideas, it would be good. 

[Circa]

[sharedmedia=tutorials:tutorials:193]