After agreeing to join the Brotherhood of steel in the Semper Invicta quest, I cant enter the Cambridge Police Station without falling through the floor. I tried loading a save an hour and a half earlier and it still happened. I literally cant complete this and am worried about continuing anything else just in case this doesn't get fixed in a patch. Tried uninstalling and reinstalling, using both entrances, entering in third and first person. Some items in the building also fall with me.