Material thumbnails are black

[Charles]

The thumbnails in the Material panel are black.
(9.0.26111.12305, 2026-04-21)

2026-04-24_NoPrev.3dm (56.5 KB)

[brvdln (Brv)]

I’ve been experiencing this issue as well since the previous Rhino version.

[Gijs (Gijs de Zwart)]

I don’t see that here. pls run _SystemInfo and post back the results

[Charles]

Rhino 9 SR0 2026-4-21 (Rhino WIP, 9.0.26111.12305, Git hash:master @ ee66d7adbde5fe887d823f2376a2f70bd3b998f2)
License type: Commercial, Build 2026-04-21
License details: Cloud Zoo
Expires on: 2026-06-05

Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 32GB)
.NET 10.0.2

Computer platform: DESKTOP

Standard graphics configuration using DirectX
Primary display: NVIDIA GeForce RTX 2070 (NVidia) Memory: 8GB, Driver date: 1-20-2026 (M-D-Y). DirectX(11)
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0

Secondary graphics devices.
None found.

DirectX Settings
Safe mode: Off

OpenBLAS: OpenBLAS 0.3.30 DYNAMIC_ARCH NO_AFFINITY Zen MAX_THREADS=64.

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 9 WIP\Plug-ins\Commands.rhp “Commands” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 9 WIP\Plug-ins\UpdatesAndStatistics\UpdatesAndStatistics.rhp “UpdatesAndStatistics” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoRender.rhp “Vorgänger Rhino-Renderer”
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 9 WIP\Plug-ins\MeshCommands.rhp “MeshCommands” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 9 WIP\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 9 WIP\Plug-ins\SectionTools.rhp “SectionTools”

[brvdln (Brv)]

Rhino 9 SR0 2026-4-21 (Rhino WIP, 9.0.26111.12305, Git hash:master @ ee66d7adbde5fe887d823f2376a2f70bd3b998f2)
License type: Commercial, build 2026-04-21
License details: Cloud Zoo
Expires on: 2026-06-05

Windows 10 (10.0.19045 SR0.0) or greater (Physical RAM: 32GB)
.NET 10.0.2

Computer platform: DESKTOP

Standard graphics configuration using DirectX
Primary display: NVIDIA GeForce GTX 1050 Ti (NVidia) Memory: 4GB, Driver date: 10-9-2025 (M-D-Y). DirectX(11)
> Accelerated graphics device with 4 adapter port(s)
- There are no monitors attached to this device!

Secondary graphics devices.
Intel(R) HD Graphics 630 (Intel) Memory: 1GB, Driver date: 11-13-2019 (M-D-Y).
> Integrated graphics device with 3 adapter port(s)
- Windows Main Display attached to adapter port #0

DirectX Settings
Safe mode: Off

OpenBLAS: OpenBLAS 0.3.30 DYNAMIC_ARCH NO_AFFINITY Haswell MAX_THREADS=64.

Rhino plugins that do not ship with Rhino
C:\Program Files\Common Files\McNeel\Rhinoceros\7.0\Plug-ins\XNurbs (80be33b0-13b2-4ac4-9c77-03829214f9e9)\6.1.1.119\XNurbsRhino7.rhp “XNurbs”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 9 WIP\Plug-ins\SolidTools.rhp “SolidTools”
C:\Program Files\Rhino 9 WIP\Plug-ins\Commands.rhp “Commands” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 9 WIP\Plug-ins\UpdatesAndStatistics\UpdatesAndStatistics.rhp “UpdatesAndStatistics” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 9.0.26111.12305
C:\Users\Daniil.PC-DANIIL\AppData\Roaming\McNeel\Rhinoceros\packages\9.0\PanelingTools\2024.8.20.677\PanelingTools.rhp “PanelingTools”
C:\Program Files\Rhino 9 WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 9 WIP\Plug-ins\MeshCommands.rhp “MeshCommands” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 9.0.26111.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 9 WIP\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 9 WIP\Plug-ins\SectionTools.rhp “SectionTools”

[brvdln (Brv)]

@Gijs My problem is probably the drivers. I’m using Windows 10, and Windows will no longer update drivers starting from October 2025.

il supporto per Windows 10 è terminato il 14 ottobre 2025 - Supporto tecnico...

[Charles]

@brvdln

problem is probably the drivers

The issue wasn’t present 1-3 WIPs ago.
I can’t imagine it’s because of the drivers.

[764099883]

材质面板中的缩略图为黑色。
（9.0.2611.12305,2026-04-21） Mine is the same situation

[Gijs (Gijs de Zwart)]

@Charles @brvdln @764099883
could you run OptionsExport in Rhino WIP and send the resulting .rhs (in a pm)?
Thanks

[brvdln (Brv)]

Okay, things are getting even stranger. Now, if I try to apply a material to an object, the viewport screen turns black.

[mary (Mary Ann Fugier)]

Hi @brvdln,
Your drivers are a little old (2025), there are new. Your card is a not a RTX, but the earlier GTX.
Bet the lastest drivers from nvidia, of course.

Also why you are troubleshoot, disable your 3rd party plugins:
C:\Program Files\Common Files\McNeel\Rhinoceros\7.0\Plug-ins\XNurbs (80be33b0-13b2-4ac4-9c77-03829214f9e9)\6.1.1.119\XNurbsRhino7.rhp “XNurbs”

There are two Rhino test commands that may fix the issue of thumbnails displaying black instead of the material preview in the Materials panel. TestRestoreLibraryFileAssociations and TestClearRDKCaches.
Give these a try and let us know if they help.

Sincerely,
Mary Ann Fugier

[brvdln (Brv)]

@mary Ok, I’ll check it on Monday when I’m back in the office, thanks.

[Charles]

@Charles

The thumbnails in the Material panel are black.

Apparently it is fixed in (9.0.26114.6305, 2026-04-24).

[brvdln (Brv)]

@mary

C:\Program Files\Common Files\McNeel\Rhinoceros\7.0\Plug-ins\XNurbs (80be33b0-13b2-4ac4-9c77-03829214f9e9)\6.1.1.119\XNurbsRhino7.rhp “XNurbs”

@mary
I completely deleted the Rhino 7 folder. I also tried both commands, “TestRestoreLibraryFileAssociations” and “TestClearRDKCaches”. I launched Rhino 8 and Rhino 9: in Rhino 8 everything seems fine, but in Rhino 9 the issue persists — the screen still appears on every material.
I’ve already updated the Nvidia drivers. As for Windows, I’m no longer receiving any updates of any kind.

[764099883]

The problem with the multilingual package, try another language, it might be safe then

[mary (Mary Ann Fugier)]

@brvdln
Do the materials appear and then disappear?
Which renderer do you current?
Please send a screen capture.

Thanks,
Mary Ann Fugier

[brvdln (Brv)]

@mary A short video while I add materials (black background) in Rhino’s standard rendered view. However, I think it’s an issue with this office PC—on my home PC, Rhino displays the icons correctly. I suspect the inability to update Windows drivers is causing these problems.

[brvdln (Brv)]

@mary With version 9.0.26118.12305 (2026-04-28) of Rhino, the problem has disappeared and the materials are now working again.

[brvdln (Brv)]

Correction, the icon issue is gone, but when I try to assign a material by dragging it onto an object, the viewport turns dark. In some cases, as shown in the video, Rhino freezes and then crashes.

[wim (Wim Dekeyser)]

Hi Brv -

@brvdln

In some cases, as shown in the video, Rhino freezes and then crashes.

Could you post your latest SystemInfo?
Also, does this also crash when you switch to OpenGL mode instead of Direct3D?
-wim