I never had problems in this dungeon, nor in the whole game in general, but now I can't access this one, because it will crash my client as soon as I enter. On the black loading screen it will crash my client everytime I try to log in until I get kicked out of the dungeon. It never happened before, when I used to run it, and no other content, just this dungeon (and can't complete unlock it anymore).

Any explanation/suggestion please?