Bo3 Content Not installed error.

Modme | General

ModmeBot:

Thread By: Nightmare_Pie
I was wandering if anybody had any idea how to resolve this issue. I can not be in a party in zombies because it tells me that some party members do not have the content installed, even though I am the only one in the party and I have zombies installed, plus the season pass. I have validated the steam files a few times now and made several bug reports.

ModmeBot:

Reply By: mrpeanut188
I'd like to request this too, the few times I've tried to play BO3 I've run into this error. A fix would be amazing, but can't find anything.