I will attest that my wife's vagina works perfectly.It was just after this point I realized you were talking about the modeling work. I felt so confused, then stupid. Thanks for the laugh, though!
But at least I figured out what's wrong with the Daz pussies, and I have to say, it's really fucking stupid.
Earlier this morning I was screwing around with DForce and Deformers trying to squeeze Emily's giant tits into a shirt (DForce and the Deformer are also shit tools and I eventually gave up.)
Anyway, at that time I had the "Weight Paint" tool selected. It was still selected when I started doing my test renders. Apparently when this tool is selected it causes all the meshes to be visible which not only fucked with how it looked, but fucked with the coloration as well.
Why having that tool selected during a render process should change anything is a stupid fucking mystery and makes no sense to me. But when I selected the pose tool, everything once more appeared as it should.
Thankfully I only had to waste 2.5 hours solving this mystery and not two days like the last time when Roger's amazing technicolor cock started changing hues...
....I hate Daz.