Whenever I try to render a realflow mesh object with Mental Ray, the realflow object renders black when I have lights in the scene. When I remove the lights the realflow object renders fine. The same happens when I turn on Final Gather.
The problem also happens when when I try to render a "Shave and a Haircut" instance object.
Anyone encountered this problem or knows how to solve it.
(I have only used Maya's basic shader materials so far.)