Are you happy to post a screenshot?
Does the material preview ball render ok?
(Right click on the node graph, Materials->Diffuse. This should add the material to the node graph, then you need to left click on it to get octane to render it).
sorry for the post.
I finally found!!! Drivers ver ...

Hi,

I'm just getting started with octane.
I 've downloaded demo version .
My graphic card (NVIDIA gtx680).
OS is Windows7 - 64bits

I can't see any image, only black screen.
Message is "0 Textures, 0 Triangles, 0 Displacement, 0 Hairs. O Mesh..."

In material window black sphere.
Thanks.