Model in ShapeEditor looks all black

hi all, I'm new to T3D, and I'm learning T3D 1.0 now. Maybe I changed something wrong, 'cause my model in ShapeEditor now look all black in "Advanced lighting" mode, and looks right in "Basic lighting" mode. I didn't change class GuiShapeEdPreview, so I guess I made something wrong in "Advanced lighting" source code, but it's hard for me to find out. Could someone tell me where to start my checking?

any help will be very gratefual, thanks in advance.