Ok, I'll try the pict, maybe there is an issue with tiff. I know about editing the files by hand, but can't do it that way on the mac. The stupid textedit program insists on saving my mtl file as a richtext, even though I told it to save all new files as plain text only. It seems to think it is a simpletext document and won't give me the option to save as plain text. I just love the way Mac and Windows go out of their way to make things "easier" on you. I guess I'll try opening it in one of the UNIX text editors that come with OS X next time I don't feel like opening poser just to edit an OBJ.