Decided to create my third character and started the first story line, Dawning of an Endless Night. Heavily out-leveled the area while enjoying the Anniversary event. Right now I am stuck on Tier 4 (Ask Dr Bannerman about the Lady Margaret), where you have to go and speak to Dr Bannerman and receive a clue about the Lady Margaret.
The dialog box appears when I go to the good doctor. When I click on it, it greys out but Dr Bannerman does not speak. It remains grey until I zone out and zone back in. I have tried logging, running another nearby NE story mission I had not run, waiting days and trying again, and just waiting around. It never advances and the dialog box remains grey.