Not sure what clothing pack you're talking about. I just downloaded the school uniform and noticed its not Poser 5 but the skirt was named "Blouse.cr2.bin". So I deleted the ".bin" part. Then when I opened it in word there is a bunch of jibberish at the beginning of the file that may effect it opening in Poser. The obj files need to be in ":Runtime:libraries:character:Koshini#MOTSURA" or you can do like me and change that in Word or Notepad.