I am also experiencing this problem; any attempt to enter the Strip leads to the game crashing to a black screen with music and a non-responsive controller. I'm extremely unhappy about this, as the Strip is not exactly an optional side-quest.
I'm going to start a new Legion-centric game in the mean time, but I hope that this is fixed soon.
I think I've completed almost all of the side quests already and now I'm just waiting till I can get in the Strip,... have the same issue with the black screen and music.. must try wearing the cowboy hat tho, as deleting and reinstalling game data/patch didn't work.. even previous save games will crash the moment I exit the tops casino (after getting ambushed by Benny again) and head into the part where the lucky 38 and Gomorrah is.. I found it's ok if I kept 'looking' at the lucky 38,.. but the moment I look across to the Gomorrah,.. crash..