I'd suggest doing what chark and finalrpgfantasy suggested, and if that doesn't work, then you're just going to have to most likely start from your previous save before that. Sux but it happens... keep 4-5 save files and save frequently.
Also, another good tip is to not play the game for long durations at a time... keep it at roughly 1-2 hours each play time and then take a break, because I've found that when playing the game for long durations of time (3 or more hours), the loading times gradually get slower and slower, especially if you're frequently traveling in and out of the city of New Vegas itself. I think the most playtime I logged in one sitting was close to 5 hours, and the load times got so long at one point the game got stock in an infinite loop trying to load one of the areas and i had to do a hard reset.
It's a great game once you get around these unfortunate bugs... more side quests and stuff to do than in Fallout 3, and the story has multiple branches and endings that you'll want to try to play through each one, so make sure you keep one or two save files from certain key moments in the main quest... you'll know what they are when you reach them. That's all I'll say without spoiling anything for you.
On 2/24/13, MB1025 said:
You know I was always wondering why no one ever used the dollar sign for $ony, but then I realized they have no money so it would be pointless.
