Well this actually caused me to reload again last night.
I just beat Concord with my new character and went inside the museum. The MM gave me a gift for helping. I said, I'll take it. Well right away he called me a Merc and starting bashing me for not caring for other people, then went on preaching about if I ever have a change of heart to go see him blah, blah, blah. Holy crap where the hell did all that come from? I had to reload going into the museum to start the dialog over again as that certainly didn't lead to where I thought it would.
Damn freaking Dialog System.