Hello. I bought the Delicious Main Course DLC from GOG. Installed it directly to my directory (offline download, that is), and I can't seem to access it. I've been informed that I have to find a boat near the Masoleum on the first Inkwell Isle, so I did through an existing completed file but it's not there. So I tried a new game, beat the first Masoleum again, and the path to the DLC hasn't been unlocked. What's the deal?

EDIT: Quick Update. So I uninstalled both the main game and DLC, and reinstalled both of them. Inexplicably, the game works properly, as it shows Ms. Chalice in the title screen.