Plutonium

Please help me, i added my friend and when he is inviting me i cant join him what is the problem? i am having error and cant join. Knowing that i am middle east & he is Europe is it a problem? we can play together in general servers.

Please help.

I followed my friend & he did the same, i cant find him in Black ops 1 zombies to play private game ? please help how to sort this out.

Regards

i cant add my friend to make private zombie game BO1, how can i add him?

put how can i do the server? i cant find my friends online how can i add them ? please help

How can i make a private server B01 zombies to play with my friend? i dont want to play open server and anyone can join