I was trying to create a head morph target of Vicky3 in Zbrush. For a simple test, I just modified the eye angle of Vicky3. Then put it back to poser, and applied the Vicky3 high resolution texture on her. I followed a DAZ tutorial Creating Morph Target in Zbrush by Glen Southern. The head is almost black in strong lighting as shown in the picture. I looked at Material room. The head texture was applied on her.

What am I missing? Any idea what I should do to solve this problem?
Thank you.