I have the Xbox 360 version of Saints Row 2. I have successfully played co-op with another friend in the past where we both only had the Unkut DLC. A different friend of mine has all 3 DLC packs (Unkut, Corporate Warfare, and Ultor Exposed), and we tried to play co-op last night but we both kept receiving this error, even after I bought the rest of the DLC:
You do not have the same downloadable content as the host
But... I do. We both tried hosting to no avail. Is there any fix for this?