Originally Posted by BenHenry
Honestly, I wish you would elaborate more on the help section on the website. Maybe a tutorial or two explaining the 3 point shader, and showing how you get it to work. I thought it would just be simple, plopping in a cubemap and bam adjust the sliders.
It is that simple. You literally just plop in the cube then adjust values. Note the lack of bug/problem reports in this thread
If you experience anything else, try installing the latest 3ds update, newest video card drivers, reset your scene, follow all the advice on our site like disabling 3ds gamma, etc. Test the shader on a simple teapot object - do the harsh black shades still appear? Do other shaders give you the same broken result? Are you running an AMD/ATi card?
Try to make a material from scratch. Make it minimal, with as few maps and parameters as possible - at which stage do the harsh black shades appear? That will help you isolate the cause of the result you are getting.