Science Institute Mad World

I wandered all round the place, turning on the Tree Program on each stalk/globe that I could find and spoke to Pinhead. However, when I returned to the Guild of the Unknown, the guy who gave the quest is still saying that they are interested in the Mad World, so it looks like I haven't completed it in some way.

What do I need to do to finish it?

Thanks.

The Tree Programs are either deliberately a red herring, or were rendered useless thanks to an error in the coding, but thankfully, you can still complete it. You need Sandy to skip the "Tree Program" thing entirely. Simply check that locked door with Sandy in your party, and she will unlock it. You will come across a small area with a chest containing a unique spellbook, and a cave. Inside the cave is another chest, and your quest will be complete when you open it!

Also, you will be teleported to the world map, but if you re-enter the Mad World and go back to that chest and check it again, you will be teleported to a new area! Go down and talk to Dave with Sandy to get some bonuses for her.

Thank you, you've saved my sanity.

Also if Luciana's Beacon spell(can't remember the exact name) dissapears, go in and out of the mad world again and it will be back.