re the version of 4.02.1.58
It seems no material can be rendered and manipulated, see the below image.
the pick material button from the OC viewport not function and the material node appears empty even if to select a material from the scene material....
unfortunately this is the only version compatible with the new 4.02.1 Octane core (which had just resolve the conflict with Nvidia driver 419.xx) guess the problem is from the ver58
kindly could you possibly and quickly compile a new version using version 57 but compatible with 4.02.1 OC core,
Many thanks,
Jim