Do they render or can you actually save them (automatically through picture viewer, all other options are irrelevant when rendering animation)?
I am running C4D19.024 / 3.07 R2 and it works in the LV but you can't save it to a file. EXR creates a channel but it stays black or white, respective of ...

it might be a bit off-topic but since you mentioned it please allow this quick side question:

The octane multipass file dialog does not save any images when rendering with picture viewer. (render passes enabled, C4D save dialogs enabled or disabled does not matter).
I am fairly new to Octane so ...