so uh

i was on my way back into new vegas and i was either going to go see mr. house about what to do next after i went to fortification hill with the platinum chip, or to go talk to yes man about ignoring all those tribes and families and all. and i go to the entrance and new vegas is locked and it says i do not have the key required to get it

i guess possibly it might be a glitch where i don't have it anymore or something?
or is there a capacity to how many keys you can have on the keyring?

whats happenin?
anyone know?

poll doesn't really pertain to my question