Texture Paint not applying 2.78 I followed several tutorials on how to paint my model with texture paint.
I've unwrapped the model and made sure I have a material and a texture. I have a node to place my new texture image on my mesh, and I placed that image on my UV map as well.

I have no idea what I've done wrong, but painting on the mesh and the UV map doesn't work.
I suffered from this same problem, When you select TexDraw as your brush it automatically selects a texture to draw with, in which case is usually the new black texture you made to paint on so everything is black and will never be anything but.  Just clear the texture from the TexDraw brush and you're in business.