Can confirm: Octane didn't render anymore after driver update, but reinstalling 417.71 fixed it (and it's not Lightwave-specific as it was happening with the 3dsmax plugin as well).

Now I feel silly: despite searching the forums quite a few times, I seem to have missed a post that had an even simpler solution
As for showing the tool, it's just an internal tool so I'd have to clean it up first, but sure I'll eventually post it.

Nevermind, I managed to force it to close using UIAccessor :)


fn closeOctaneViewport = (
local hwnd = dialogMonitorOps.GetWindowHandle()
local children = UIAccessor.GetChildWindows hwnd
for child in children do (
local windowTitle = (UIAccessor.GetWindowText child)
if matchPattern ...

This can open it:

actionMan.executeAction 982383860 "2642"

but haven't been able to guess a way to close it programmatically (and I've been searching in actions, properties, interfaces and globals, just can't guess it).

I'm writing a tool to bake textures and was able to automate everything ...