Problem with Ultimate Eyes for Genesis 8

quarksRender

Hi, I'm quite new to Daz Studio and I have a weird eye-problem.

Picture 1 is the eye of a default Genesis 8 Male with an Ultimate Eyes for Genesis 8 eye color applied. It's like the iris is there twice, the bottom one slightly larger.

In picture 2 it's more visible. I applíed a darker iris.

When I go to the surfaces tab into Genesis 8 Male - Surfaces - Irises and I set the base color to none I get picture 3. And when I restore that and set the sclera base color to none I get picture 4.

It's like the textures (don't know the vocabulary yet :-) ) for iris and sclera don't correctly overlay.

Is there anything I can do to fix that?