When I changed the extension to .gz it opened in Powerdesk (I don't have gzip) and at first extracting it from there didn't work ... but when I disabled paths it did! yay. Thanks! So I figured that might be the problem with Winzip too. And it turned out it is. But not at easy as Powerdesk. Revised instructions for Winzip: Associate compressed extension to Winzip. Double-click the Poser file you want to decompress. Click the big 'Extract' button In the dialog, uncheck 'use folder names' Navigate to somewhere where it won't overwrite the file (it won't work if it has to replace the file even if you tell it it's okay to replace) Voila! Just remember to re-select the 'Use folders' next time you use Winzip or a poser install will end up a mess. Oh, and something else I just learned about Winzip. If the file's too big to check whether it successfully uncompressed or not, if you double-click the file and it's NOT compressed, it will simply open in a winzip window. But if the file is uncompressed, it won't show in the winzip window and winzip will give you the 'add to zip' dialog. Neat!