hmm..you may have to go the manual route. No 'fense, and it may not be the case here, but sometimes files don't go where they're supposed to (I use a lot of Sixus' stuff, and sometimes' I've messed up a character, because a geometry, or a texture, or something I put goes in the wrong place. Probably something I'm doing).
In the title of the Poser forum is a backroom, and in there is a chart Doc Geep made to show what files go where. At a minimum, the geometry file might not be in the location it's supposed to be. What I do sometimes is open the zip file, then look on the right of the listings, to see what directory they're supposed to go in. Then I may even create the directories..(being a IT guy is like being a cop..since you only see the bad side of your subjects, it tends to make you a bit cynical..;) and physically move them into them.

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)