Forum:Veni, Vidi, Vice glitch, help please!

I'm on the Veni Vidi Vici quest, where Caesar's Legion assaults Hoover Dam. I'm at the part where you have to kill General Oliver. When I kill him, the radar tick remains on his corpse, and the objective for killing him remains active in the Pip-Boy. Its like the game isn't registering that I killed him. Also, when I head down the stairs to the area where you first enter, there is not prompt on the door for me to exit the area. I'm trapped in this spot. WTF, can anyone please help?