I'm in Vault 19 I've unlocked the Overseers Office from below after killing the Geckos, when I go to walk up the steps into the Overseers Office Boone turns round and gets the Elevator back down to the lower levels but when I go down to get him hes not there when I come back up he appears and then I walk up the steps and he runs off to the elevator again. He keeps doing this, anyone else had this or know why, I haven't changed my Good an Evil alignment in anyway. Any ideas?????????

I haven't visited any of the vaults yet but whenever I fast travel to Novac, either Boone or ED-E run off towards the brahim and then jog back about twenty seconds later. Maybe it's because they need a [censored], tis rough living in the desert

Theres not much I can do about that lol, I'll just continue on and see if he turns up again

Have you tried to press the wait button?
Going outside?
Fast traveling?
Restart the game?

Ask Boone to wait outside the vault? Or down the elevator?