Aha ...
Not just the wrong folder name! The props are assigned to the wrong (non-existent) "Refit" folder.
According to the list in the Read Me, for example, Sweater Red.ppz is in the P6 Clothing refits for Ryan. It's actually in the P6 Jessi WW Conversion for Alyson.

So that's sorted out - the props are in the WW folders and assigned to the right people.
It was confusing, though ...

Thanks for the help!
S