Trying to get back in Blender, sadly even the simplest thing is hard to do in Blender…
This was going to be a birthday gift for  RUdragon but sadly after already fixing many other errors I get this… for some reason these black things appear on the final render.
This is RU’s collar for RU’s model (I really have to work on it) and it works with multi-resolution: bottom left is low resolution, bottom right is sub-surfed once. It’s actually just a simple shape that’s repeated a couple of times in a circular shape (this took me a while to figure out how to make it work). This is why these black shapes are so weird because they differ where the model is the same all the way around.
Top right is the UV for the textures, a bit messy but the shapes are only a single colour.
It’s only the render, in the editing window the textures seem to be fine as you can see at the top images in the top left.
If anyone knows what could cause this and maybe how to fix it than I would greatly appreciate it.