I was given the quest by Marae by taking the boat, and explored the Mountain to discover the Factory dungeon. It's now available to visit in the Places>Dungeons menu, but when I try to access the dungeon, the screen goes blank upon pressing Enter without showing any more text. The Enter button stays there, but doesn't do anything. I can still leave, and it slips me right out of the door, but I cannot do anything in the factory.