Material Thumbnails with no reason now became all Black!

Hello,
I have been working with the latest Rhino 7, for some time. All was fine, then today, the material preview thumbs, became all black. After some trials, even doing with a brand new document, noticed that is something related with the lighting:



I could try to work with the option of simple lighting, but it only affects the main preview and the quality of it is very pour…
Moreover, this demo that I am showing is already made with Rhino reinstalled, with nothing else besides starting a new document! I cannot figure out why this has happened? I did also reinstalled the Nvidia Drivers! Before was fine, and now!?!
Please help me!

Here is my system info:
Rhino 7 SR38 2024-12-3 (Rhino 7, 7.38.24338.17001, Git hash:master @ 97e36efa02d7f71638988290bb2d190fcf1b18c5)
License type: Educational, build 2024-12-03
License details: Cloud Zoo

Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 16Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 3060 (NVidia) Memory: 12GB, Driver date: 5-14-2025 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 576.52
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port 0
- Secondary monitor attached to adapter port 1

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 5-14-2025
Driver Version: 32.0.15.7652
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 12 GB

Rhino plugins that do not ship with Rhino
C:\Users\riped\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\SubstanceImporter\2.0.7\Substance.Win.rhp “SubstanceImporter” 2.0.7.0
C:\Users\riped\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\AMDDenoiser\0.5.3\AMDDenoiser.Windows.rhp “AMDDenoiser.Windows” 0.5.3.0
C:\Users\riped\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\NVIDIADenoiser\0.4.3\NVIDIADenoiser.Windows.rhp “NVIDIADenoiser.Windows” 0.4.3.0

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.38.24338.17001
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.38.24338.17001
C:\Program Files\Rhino 7\Plug-ins\RhinoRender.rhp “Legacy Rhino Render”
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.38.24338.17001
C:\Program Files\Rhino 7\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 7\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 7\Plug-ins\RhinoCycles.rhp “RhinoCycles” 7.38.24338.17001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.38.24338.17001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”
Thanks

Pls give it a try with following solution,

Already did that before and nothing happened.

No dia 09/06/2025, às 04:18, Jessesn Chen via McNeel Forum notifications@mcneel.discoursemail.com escreveu:

| Jessesn Chen jessesn McNeel
June 9 |

  • | - |

Ripedro:

I have been working with the latest Rhino 7, for some time. All was fine, then today, the material preview thumbs, became all black. After some trials, even doing with a brand new document, noticed that is something related with the lighting:

Pls give it a try with following solution,

Please try to update Windows 11 to the latest version, and unstaill the current GPU driver and go to follow page to download the latest version, then try to update it.

Also was with latest driver updates on Windows 11.
Remember, everything was ok and suddenly that bug came out. Is it there an option/setting on Rhino 7 that changed, and with an uninstall/install kept there on registry?

No dia 09/06/2025, às 11:20, Jessesn Chen via McNeel Forum notifications@mcneel.discoursemail.com escreveu:

| Jessesn Chen jessesn McNeel
June 9 |

  • | - |

Please try to update Windows 11 to the latest version, and unstaill the current GPU driver and go to follow page to download the latest version, then try to update it.

NVIDIA

Driver Details | NVIDIA

Download the for systems. Released

You try to repair Rhino 7 follow below steps, hope it works to you.

  • Click the Windows button
  • System > Apps
  • Find Rhino 7 and click it with left mouse button
  • Click Modify and Repair buttons,

Hi! I went further than that, I did a full uninstallation of Rhino, cleaned all folders related to Rhino, and even uninstalled all Nvidia stuff, installed everything again, and nothing changed!
I cannot figure out what else I can do!

Found the problem!
The latest download of Rhino 7, does not install the following folder: …\AppData\Roaming\McNeel\Rhinoceros\7.0\Localization where, there is a file for the Skylighting.