after retrieving the briefcase from turkish bats, as i enter fulton station i meet mich deval who asks me about his brother, there is another guy standing next to him blocking my way from entering the station, i waited but he does not move away from the position, he just moves left or right when i move, still blocking, i can see other people walking up and down the station, i waited for long yet this guy does not move from the position...do you think it is because i didn't complete any missions/collectibles before? or is it something wrong with the cd? pls help. i'm stuck. tnx.