I made it to the bottom door of the Arcane Tower today, but couldn't unlock the door. All of my characters were out of resources - at least, that's what the game said. I went for a long rest and came back. Still out of resources. I could walk. I could jump. But I couldn't do anything else. Not just not open the, but I couldn't pick nearby plants, or loot nearby vases. I could walk. I could jump. Everything else returned "not enough resources". I tried returning to camp to give Gale a shot at the door. He was full-resources while in camp, but "not enough resources" at the tower.

I've got about 50 hours into the game. I'm not an expert, but neither am I new to the game. My character is level 5.

Is there a work around?