How do i stop conspiracy?

[Junior]

I have a feeling my quest line is bugged. I collected the parts and gave the banner to the faction im fighting for now. I go to talk to Arzagos and when i click "about the task you gave me" nothing happens. the game doesnt freeze but i cant leave or continue the conversation and have to quit to menu and load my save.

Edit: Not sure why my pic is Lady Arjis. Not mad though, lol