No matter who i go to, to sell and buy stuff the game crashes. Iv tryed buying one or 2 items are a time, iv tryed only buying ammo or just weps. Meds or cards. No matter what the item is the game starts to lagg then crashes. It happens 80% of the time. I have to save before each vendor for fear it will crash. Some times i have to reboot the game 5 times just to buy something before it wont crash. I never had this prob untill after the patch. This patch fixed all my other problems and i was happy. Untill just now when i crash for buying and selling items.

Try dropping all items in your inventory. The easy way to see if this is an issue is start up a save. Start the console. Do Player.RemoveAllItems and see if that fixes the issue.

If it does drop every thing you can then do the RemoveAllItems.