All,
I resolved the Boulder City Quest by negotiation and the map shows me as "Accepted" by the khans. When I walk around Red Rocks, the regular khans ignore me. However, if I see any of the "named" khans (such as Papa Khan) they immediately go hostile and attack. I've set the reputation to "Idolized" using the console and they still attack. Anything I can do to fix this? Thanks for any help

The only thing I can think of is warping out of Red Rock, setting the infamy to zero via player.setreputation 11989b 0 0 and waiting, then going back.

But I'm fighting a similar bug with the NCR, I am totally fed up with that because while playing NV for the first time I had no such bugs.

Cheers

EDIT: Mayby you should try faction reaction:

http://www.gamefaqs.com/boards/959559-fallout-new-vegas/56815420?page=2

I am currently playing around with that...

Maybe u are wearing some faction armor like the NCR one. Hm but then the normal guys would also attack you.

Sorry for ressurecting this thread, but I'm facing this very same issue right now. I'm currently Liked by the Great Khans and while the ordinary Khans are friendly, Jerry the Punk and all named Khans (Papa Khan, Regis, etc.) are hostile on sight. Not even faction armor solves this.

I can provide my mods list but I don't know if any of them have any effect on this. Any advice on how to fix this? I'd like to side with the NCR and enlist the Great Khans' help.