Rhino 6 material editor errors

Hello,

I have installed Rhino 6 with Octane 3.08.0.88 (Octane 3.07 standalone) and I am getting some intermittent errors when using the material editor.Firstly the materials aren't displaying correctly in the material editor. The standard materials look fine but the Octane don't.When I first open a scene I get the errors. Then some time later I don't. But the material preview still doesn't work?The renderer seems to work fine if I open a scene and just render. But if I try and adjust a material or add a texture it gives me these errors.I also had an error when trying to use the LiveDB.Any ideas?I also note that the Octane materials don't display correctly when using the Rhino shaded or rendered display. Is this the same problem?

Please help.

I didn't find the right solution from the Internet.

References:-

https://render.otoy.com/forum/viewtopic.php?f=41&t=66287
Vendor Management Software Example

Thanks