Change the test prop shader like this. This makes it emit black, regardless of your lighting.

That's because we set Diffuse_Value = 0 and Specular_Value = 0. Meaning, all internal built-in light-related nodes are disabled.

The prop renders black all the time as a result.

---

Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)