Material preview issues R24 Arnold


#1

I can’t see my Arnold Material previews in Cinema4D R24.
I do see them in R21.
What could be wrong?

Attached sample images.

Arnold%20R21Arnold%20R24


#2

Are you sure your Arnold is working in R24 at all?


#3


#4

And my Material Previews are back…
I reinstalled Arnold.