Actually with any texture I tried (on two different systems), and I even tried .jpg, .pct AND .tif, for Poser 3 and Poser 4 figures and DAZ's Michael and Victoria. I think it is the way Poser 4 (os9) stores it's information about the texture maps or something. Nowhere along the way it asks for any missing stuff. I sent Eovia Europe Support an email. Because it is never mentioned it should not work with Poser 4 ProPack... (I will update Poser anyway)