Morphed Character Face Rendering Pasty White with iRay Shaders

inquire

 If I render the character with a morphed head and face in D|S using the 3Delight renderer, it looks fine. Same thing if I render the character in Lux. But, if I render the character with iRay in D|S, either with or without iRay shaders applied, the face comes out looking all pasty white (or whitish). It doesn't look good at all. What could be the reason for this? I'm guessing it's because of all the morphing, but still that doesn't affect the rendering in 3Delight or in Lux, only in iRay. Can this be corrected for a render in iRay, and if so, how?

This is a genesis 2 male character.