Okay, I just test-rendered the Long Hair Evo, and yes, it does render correctly. I guess it would just be a PITA to style it but it will work. The short answer on which ones don't work is all of the others. Examples are Long Hair V3, Koz's Pony, Messy Hair, Short Hair Evo. These all just spit back the message that the file being read is not a valid Poser file. It just doesn't make any sense. I have used the Koz hair on Jessi since P6 was released. I never had any problems. The Koz hair has always been fantastic for me. That's why I figured I would use it on Vicky now.