Maybe there are markings or items that the character is wearing but are not installed? I.E you might have had Legendary Markings installed before switching to Mass Markings and your character wears Legendary Markings, same with items if you have any installed. Or maybe you've uninstalled a marking/item pack that your char uses?
I don't even know if that can cause a crash, but it sounds possible to me. I've never had that problem before.