So.... I did a couple of jobs for the Graffs to get some experience, then they asked me to bring in Cass (which I never did).
I've been back in the area a few times over my travels...

I was on the quest Carlitos Way and rescuing his woman...I zone into Freeside and all of a sudden the crier starts shooting at me with his plasma gun!
After Cass and my Robot kill him, then comes Simon (the door man for the Graffs) and he starts shooting! Then comes everybody else from the Graffs place and we ALL start shooting!

I was like WTH is going on?!

Is this a glitch? I tried to reload the game, but that damn crier just keeps shooting at me.

So, now I have killed most of the bodyguards from the Graffs, so I don't know what the ending will be since I turned over that evidence to the NCR.

I was trying not to be violent, but that damn crier shot at me! :banghead:

Has anyone else had this problem or glitch?

Turning in the evidence to the NCR makes the Van Graffs permanently hostile to you, since you exposed the shenanigans they had going with Crimson Caravan. The crier is part of their faction, so he will shoot you on sight as well.

No you did it right, you'll get Cass's good ending if she sticks around with you for the Hoover dam fight.