At the end of the installation, did the installer suggest that you allow it to initialize the figure?  And did you answer yes?  If so, the figure should be fine.

Did you install to your Poser Runtime (the one with the executable in it)?  Assuming you may have external runtimes, this figure wants to be in the base runtime (as do V4 and M4).

When you get the weird result (girl head, V4 body) can you see the Girl morph in the list when selecting the body?  If so, is it adjusted to 1.0?  If not, turn it up and see if the morph works.  If the morph isn't present, find the injection morph and apply it.

Hope one of these helps.

Klebnor

Lotus 123 ~ S-Render ~ OS/2 WARP ~ IBM 8088 / 4.77 Mhz ~ Hercules Ultima graphics, Hitachi 10 MB HDD, 64K RAM, 12 in diagonal CRT Monitor (16 colors / 60 Hz refresh rate), 240 Watt PS, Dual 1.44 MB Floppies, 2 button mouse input device.  Beige horizontal case.  I don't display my unit.