Hey guys, I got the same problem here.
I have both the legit CoD and the cracked CoD, and cracked/warez'd/torrented DLCs Rezurrection and First Strike.
In the case of my legit CoD, when I put them in the folder and bind the maps to keys in order to load them, it just tells me that I do not own the map and that I should download the DLC or whatever. Is there any workaround this?
In the case of my SKIDROW CoD, I had updated it until update 6 then copied the Rezurrection over it. While loading it gives me an error such as couldn't load image 'ballistic_knife...' and closes the game.
Any idea how to play cracked DLCs on legit CoD or cracked CoD?