I've got a huge problem with a Guild Wars Nightfall mission and im hoping you guys might have a solution

Im doing the second story mission - the one the Digmaster sents you on (second story mission, Fahranur with Kormir, the tablets thingy, I hope you know which one I mean). I finished it a couple of times already, seen the cutscene, but it just doesn't finish. I get back to Kamadan, but nothing.. the Digmaster is still there with the same damned mission :/. I can't advance in the storyline, I already did all of the quests I could find and im getting desperate.
Help?
