bbascuba.... try opening the bum file that won't load in a graphics editor, (PSP, PS, et al) I just had exactly the same thing happen to me & it turned out that the bum map I was trying to load had the wrong file extension! Instead of converting the format I had inadvertently, (at about 3am :-) saved it with the extension I wanted & then spent the next hour swearing at my computer in general & poser directly because it couldn't find the file.