mark of the assassin issue

[LesskarrWolfe]

hello so in my current da2 play through im currently in the mark of the assassin dlc and have just  finished off the final boss but the end of dlc cutscene wont trigger and im stuck in the boss area i have tried reloading save few times now and redoing the fight but it still wont go to the ending of the dlc and not sure what im doing wrong any advice?