I was having difficulty with the Sclera on my V4 models after running VSS PR3. So I decided to tinker with it. BB released a generic GC shader so I put this in place of the set up for Eyewhite on the control prop and I'm getting better results for the Sclera now. Give it a try. Here's a render. Her sclera was rendering greyishly, now it's whiter. There's a few other tweeks to the skin shine and tint too.

"A lonely climber walks a tightrope to where dreams are born and never die!" - Billy Thorpe, song: Edge of Madness, album: East of Eden's Gate

Weapons of choice:

Poser Pro 2012, SR2, Paintshop Pro 8