I'm having trouble completing the Yes Man path of the game. Prior to disabling Mr. House, I upgraded the securitrons for him inside Fortification Hill.

After Yes Man uploads himself, he sends me to the Lucky 38 basemant for a "demonstration". This is where the trouble begins, as the game does not "detect" me as having entered the basemant.
The quest says I haven't entered the basemant, but I have, leaving me unable to leave the room unable to do anything except to look at the big force field and all the stationary securitrons. How can I fix this?