BO1 dlc's like accencion en shang wont wurk

[Tjinte]

(Zombies)

I had de moon and world at war maps already on steam but when i downloaded plutonium and did the staps to launch bo1 i couldnt play any dlc map except moon and the world at war maps

[Mr. Brawnie]

Make sure you have installed the bo1 multiplayer, I think it could solve your issue.
I had the same problem years ago and that was the solution.