I among others have had problems with Sergeant McGee taking a walkabout thru the wasteland and getting a notification Sergeant McGee has died. This problem has come up for me by killing everyone at NCRCS. I probably did this way before its supposed to but have found others having this problem even after doing the quest about raiding NCRCS. So I tracked him down and found him a little north of Primm slain from the first group of gekos he comes across. If he dies from a group of gekos he is not going to last 1 second infront of a giant radscorpion so I came up with the way to make him essential.

Pc only unless you can activate the command console from your ps3 or xbox 360.

1.Load the game before he starts on his walkabout.
2.Press the tildo key at the top left of your keyboard (Looks like this ~)
3.Type in the command box setessential e2c93 1
4. Escort him to his destination.
5.??????
6.Profit

If he gets stuck on objects move ahead of his path a ways then come back twards him he will move past the object same thing goes with hills that you or him cannot climb. He only seems to make progress on his journy when you are near him. He will still become uncontentious but will not die. Makes the trip 100% easier since he wont die.

Ever since ive escorted him to the ncr post I have had no crash in 3 hours and counting. The game will chug down and freeze but it refuses to crash then its back to normal \o/. I was crashing every 5 minutes but im a masochist by heart.

I know the requirements to play the game is more then my computer should handle im running on lowest settings with a 3.4mhz single core hyperthreading pentium processor, 1 gig of dual channel ram and a nvidia 6200 256mb ram wallmart special its got 4 pipelines not 8 like later models video cards of its type. but it does have shader model 2.0

would be nice if all that time the game was crashing was due to something scripted being out of whack