No, the meshes are o.K. Rendered in Poser 4 there are no visible holes but more important, if I change the direction of the sunlight from right to left in Vue, I get other artifacts, whereas the bad spots in the image above look o.K. Alternatively I could turn up ambient light and then you can also see that the dark spots are not holes in the mesh but rendering artifacts. If anybody is interested I can upload images to proof this.