i have D/S 3.1 advanced as well and i find mainly only poser materials (not textures but actual baked materials) and poser dynamic products are about the only things that do not work in D/S 2.3 or D/S 3 free or adv

i don't have any poser specific lights or light gels from freebies as well that's how i find out if they work rather than buying them and finding out after spending the money