Also--have you tried recreating this in Poser 6 to see if its V4 causing it?  That's one way to examine the parts before assigning blame.  If V4 works in one and not the other, it's P7 gone buggy.

I cannot save the world. Only my little piece of it. If we all act together, we can save the world.--Nelson Mandela
An  inconsistent hobgoblin is the fool of little minds
Taking "Just do it" to a whole new level!