Please find attached the max file with 2 renders.
One with forest color default material on, renders super dark, 8minutes render time
the other, with a stone jpg as diffuse, no forest color, renders fine, 28sec render time
scene max 2013, vray 2.4; settings irradiance & light cache, environnement ON, no sun
I read on another thraid, someone having black objets, but because he didn't set the path. I remember doing it, plus it finds everything in asset tracking anyway.
- I join another example, with flowers, so you can see it's not totally black object, but just a lot darker.