This is funny - I used version 5.5 as well! Are you sure that it extracts into just one folder "Poser 4" on your system? All my various 5.x's produce the bug. I checked the file "transcurls.zip" in question and found out what's going on: The .zip stores the access path for ":POSER 4:RUNTIME:LIBRARIES:CHARACTER:HAIR:Conform Curls Trans.cr2" in uppercase, but everything else in lowercase like ":Poser 4:Runtime:..." StuffIt obviously has a bug in one part making a case-sensitive check for the filename (accidently believing that "POSER 4" is different to "Poser 4"), but another part of the program renames it to "POSER 4.1" to prevent overwriting "Poser 4". The odd thing is that all directory paths are stored again at the end of the file, but this time all in lowercase. StuffIt seems to be the only expander that looks for the first occurence, everyone else takes the one at the end. Are there any .zip wizzards out there that know what's the reason for this double entry?