No, unfortunately the problem is still there and I have no idea what is causing it. I think it's just me being 'special' that I can get this problem on both of my machines, running the same version of Poser, with the same content, the same Windows Ultimate 64-bit.

It doesn't matter though. It is easy enough to delete the nodes and recreate them every time I want to make some adjustments to the Diffuse colour to darken the textures up a little bit. It's an awesome product though, and this little niggle isn't going to stop me from using PHC on Nykta. Even if I have to wrestle nodes into submission! ;)

I am still hopeful that someone, somewhere will either know what is causing this problem or someone else is having the problem as well. Right now, I'm just living with it and hoping it doesn't appear anywhere else.