Plutonium

Resxt I found the problem, somehow all my files were broken. thanks for the help!

Xerxes yes I have

Resxt Just tried repairing them and I have both installed, Steam says there's nothing wrong but I keep getting the error

FutureRave I had the game's folder for steam selected and it lets me into MP but not Zombies for some reason and I'm not sure if there's another folder I have to select in order to play Zombies or not

no clue why this is happening even though I was just able to launch BO2 Zombies via Steam and ran it without the error and then get the error on Plutonium. Any sort of help would be nice