Sorry for poor sentence structure, don't know how to describe this.

     Okay, so I have Black Ops 1 and I have one mod installed at the moment. When I try to just play black ops zombies normally, I cant online without having to try and manually remove the current mods installed. I was just wondering if there is a way to fix this. Also, I wanted to know how to swap mods out so I can maybe play the gun game mod and then another mod later, but to do this without taking everything out and replacing it with the new mod.

Thanks!