Forum:My character will not load

I started playing boarderlands on PS3 with a buddy of mine playing on one console. I like the game and went out and bought it. I loaded my caracter from his PS3 to mine and began playing. It played fine and I went from level 20 to level 49 playing co op online. I downloaded the new DLC with the new patch and now my caracter will not load. It said the character I'm tring to load came from a different system and will not load (never had the problem before). I have never moded a wepon (as I do not know how). Any sugestions on how to get my character to load? This is very disappointing...