Forum:Need help to fix bug

In playthrough 2 of the Knoxx Download I was on the first Marcus mission and the only box that got checked was "steal loot"...and now it won't let me back into the armory after beating Knoxx so I'm looking for someone who hasn't beaten the first Marcus mission on playthrough 2 that I can join up with and beat the full mission so that I can progress with the game. Any help would be appreciated. I'd give up any loot found in the armory to the person who assists.