Starting with a new file, loaded V4.2, loaded morph, then mat from libraries. Just to check, rebooted, then created a new scene just now and repeated process. When I looked at your post before you'd asked for screenshot of lips in material room, so here it is. NB Same process, rendered the picture, all black, then selected area, and area ok. I've just noticed that the all black image shows a tiny trace of lips.