I have just killed Legate & his goons and then finished off the Oliver NCR guy... and spoke to Yes Man and his army, which means i have finished the main questline, i was level 19 when i killed him and i saw i got a 4400xp bonus for doing that quest, but after the cinematics and credits for finishing the main game, when i try to reload my last save (to do side quests, explore, level to 30 etc) as it says i can do.. i am in Legate's camp and he is still alive, my problem is, i cannot leave this area, i cannot fast travel away, and if i kill them all again, i'm straight back to having to kill him again... There is nothing i can do on this save, and i have no idea what do to, as i don't want to start over just yet.
Any one else have this problem?
Any advice? =[