Has anyone else run into doors in the Dread Cellar that are tagged as Impossible and cannot be opened? The group I was running with last night had three doors like that, and we had to reset the dungeon to progress. The door before the Scorion Broodlord was one of them. We don't know the cause or what we did differently after the reset. We cleared the same trash packs, but we started checking to see if the door was usable before doing the secret boss in the area.