Those scale options have not worked since Poser 4.

For V4.n look on the body pallet for "morph forms" there are dials for scaling hands, feet, head etc. Usually work better than scaling on the individual part... many of those scale dials are hidden but Dimension3D has a script in Freestuff which is very useful in unhiding dials.

I feel no figures since the Poser 4 really deal well with scaling which is very dissapionting... morphs add or shed felesh but don't change hip or shoulder with... try to fix them with scaling now and the mesh breaks and gets all wonky.

Check out the redone Poser 4 nude man figure by Pitklad...
http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2748744&page=1