I think the problem is connected with something between Chaosgroup vray & ornatrix.
when I render with vray 3.6 in maya 2018 / v2 recent version of ornatrix, i have the problem with this comment in script edtior.
"There was a fatal Error updating the scene at time 1.00... for V-ray".
so I tested many times with each version of ornatrix.
v1 is very cool, but v2 all version (stable or recent) can't render with Vray.
but it is big problem to me.
When I reinstall v1 ornatrix instead of v2,
I can't load the maya file worked with v2 ornatrix.
what should i do?
just waiting?