Okay, does anybody by any chance have a save game from right after they got into the boathouse? Because I'm fairly sure a bug broke my game. I emptied the perfume bottle then refilled it, and now I need it empty to create a potion, but it won't let me do it again. I suppose I could wait for a patch, but...
Edit: it just occurred to me there should be enough overlap between the saves that something from the arrival at the lab would work too.