Thanks all - and randym77 is right - I can do all the renders I want p4 or firefly - with all the head and body morphs injected, textures and clothes applied and backgrounds in place - but when I try to add the Mihai hair it does not even get as far as applying it - I get the little clock and then, after a while the message that Poser has stopped responding and I have to go to task manager and close the program down!! I really dont know what the heck is happening - I can still load other hair such as Daz hair for M2 and V3 hair, the only problem is the Mihai hair.