Plutonium

I can only seem to be able to play non dlc maps like town or tranzit, any dlc maps i try play and it says "An error has occured while connecting to the server" and i don't know why. I have tried to type "unlockall" quite a few times in the console and that hasn't changed anything.

Many thanks,

Niks

I have the exact problem in zombies and it is every server i try join the same message appears, please help

yeh i cant join the zombie matches
just says "An error has occured while connecting to the server"