like sdbpost said, the pillar puzzle is broken and removes the items then deactivates the slot.

I would have given a thumbs up but the pillar puzzles in the childs room are ALL screwed up and you can't proceed past that point. The correct key items won't stay snapped into the correct slots and the slots are disabled after an attempt blocking placement of the correct item. This is the case for all the slots on the pillar. I had to load it into the editor to figure all this out. Otherwise it's a nice room. I'll change my thumb if it's fixed.