Scene renders in ActiveShade, but doesn't in Production Rendering Mode.

[brand_maccus]

I'm using 2024 with Arnold 5.6.4.1 and I've opened the Room.max file from the Learning Scenes page in Arnold Help. If I use ActiveShade the Scene renders perfectly. When I try to use Production Rendering Mode, I don't merely get a black screen, it doesn't even start the Render (Rendering Time 0:00:00). Samples (minus Preview and Camera) are blanked out on the Render Setup/Arnold Renderer Rollout and Intensity/Exposure are blanked out on the Arnold Light rollout.

Anyone able to help me understand what the issue could be? Thanks in advance.

[RobH2]

Is Arnold properly assigned to the 'Production' field in 'Assign Renderer?'

[brand_maccus]

Yes, I have Arnold locked in my settings. Someone on the Arnold page reminded me to turn off the GPU rendering setting that came with the file. Works perfectly now. Thanks.