The textures weren't a fix. The pink was intentional to see if that shows up in the line. A different colour might have been better.
As to the model, whoops, forgot to enable the headlink. This should be fixed:
<removed>
Edit: It doesn't warrant a formal DS release, since this is not a universal problem, but if anyone else needs it, you can find it here - https://github.com/DarthParametric/TSL_Atton_Head_Black_Line_UV_Tweak/releases/latest