It's the first time I hear about this option, so I have never tested it... And indeed, the mod crashes, also with my own saves.
No idea why, since everything else seems to work. But I have no idea about this function, you could just as well ask me about someone else's mod...
I understand it's almost for sure my mistake with some item, but there are no other known issues. Maybe for example I gave some item some attribute that was never meant for this item type, but it doesn't cause problems elsewhere?