Do you use the lower part of your texture? In that case there will be a problem with your image, as far as i can tell from the preview image. The upper and lower part of the image do not match (see illustration), which is asking for trouble because of poser's peculiar way of image sampling. (same as here as discovered by english bob, btw: http://www.renderosity.com/mod/forumpro/showthread.php?message_id=3955335 )