I downloaded HH then started playing and went to Gun Runners to sell off some loot and the game freezes as soon as I try to exit the shop. Powered off xbox and tried again, same result in same spot.

So I said the heck with gun runners and just stored all my excess loot in my Novac room and started the DLC. Now the next day after finishing the DLC and coming back to the Mojave, I saved in front of gun runners and tried again, I sold one item, left shop np, saved then talked to shop again, bought some ammo and left np. Then I bought the 45 caseings from the shop which for some reason cost --. Then the game froze. So i think thats causing the lock ups, the new 45 ammo. Please look into this and patch it!