I could understand the logic of setting viewports and using it as Batchrender in Publisher. I used it in AC16 for two months.
If you have any other idea what I mistake, than don´t hesitate to tell me

Moderator: face_off
That scene worked fine for me too.Well, I have done some studies. Very new empty file, 3 walls, viewport saved (the name is Pic2), rendertarget saved to view. 3D-window in AC is opened, Octane is opened, Octane Viewport is opened. Photoreal settings: View Rendertarget is grayed out.
Thanks Jeroen. No mention of Octane in the crash report. Appears to be an AC18 bug (but hard to tell as always).When closing this pla from s3d-weyrauch I had a bug.
I zipped the bugreport for you if you want to dive in to this.
Ah yes, of course!It was the Fast Cache! Turned on, doesn´t work. Turned off, it works. Excuse me, I didn´t know that.