In this specific case I think it was the fact the Cumslut attribute was looking for an item that didn't exist or the items/trait was misflagged. I like the idea you have going and enjoyed what bits of the humiliation script you have going.
One other issue is that asking them to clean up certain areas of the body did not remove the fluids their description page. Though I understand that was still in works.
Your mod adds a lot more enjoyment to the game and I hope you'll continue working on it.