Ah, gotchaJimStar wrote:prodviz
EDIT:
OK, I've rechecked it. As I said - there is no bug here.
If you set the HDR image into live preview - don't forget that it has linear tonemapping by default. In your case - either do the preview in non-hdr mode, or enable "Tonamapped HDR" in Octane global settings.
.'Tonemapped HDR' in render settings was the key.
cheers man.