Interestingly enough, this is NOT a DS issue ... here is my image using the stock Matilda Aiko4 skin MAT published back in 2008. Notice that the dark-defect is a remarkably similar! My first image doesn't look like this because A4 is wearing the skin of Akemi, published in 2013 by SV7/Seven! Therefore, I assume someone can create a skin MAT which renders well in PP14. (I don't use DS4 because I have installed, but it refuses to run ... plus I've worked with Poser for 8 years now)