Running Rhino 9.0.26132.12305 in .NET 8 crashes Rhino silently when user wants to open Select Color dialog. It doesn’t matter how we want to bring it up, Layer Color, Object Color, Material Color it all ends with the same crash. .NET 9 and 10 works ok.
System Info
Rhino 9 SR0 2026-5-12 (Rhino WIP, 9.0.26132.12305, Git hash:master @ e4ca4a25a2667146cdb0b9e48607c637ec745bdb)
License type: Educational, build 2026-05-12
License details: Cloud Zoo
Expires on: 2026-06-26
Windows 11 (10.0.26200 SR0.0) or greater (Physical RAM: 64GB)
.NET 9.0.14
Computer platform: LAPTOP - Plugged in [100% battery remaining]
Non-hybrid graphics configuration using OpenGL
Primary display: NVIDIA RTX A3000 12GB Laptop GPU (NVidia) Memory: 11GB, Driver date: 4-23-2026 (M-D-Y). OpenGL(4.6.0 NVIDIA 596.36)
> Integrated accelerated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port
Primary OpenGL: NVIDIA RTX A3000 12GB Laptop GPU (NVidia) Memory: 11GB, Driver date: 4-23-2026 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 596.36
> Integrated accelerated graphics device with 4 adapter port(s)
- Windows Main Display is laptop’s integrated screen or built-in port
Secondary graphics devices.
Intel(R) UHD Graphics (Intel) Memory: 2GB, Driver date: 3-3-2026 (M-D-Y).
> Integrated graphics device with 4 adapter port(s)
- There are no monitors attached to this device.
OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
GPU Tessellation is: 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: 4-23-2026
Driver Version: 32.0.15.9636
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 11520 MB
OpenBLAS: OpenBLAS 0.3.30 DYNAMIC_ARCH NO_AFFINITY Haswell MAX_THREADS=64.
Rhino plugins that do not ship with Rhino
C:\ProgramData\McNeel\Rhinoceros\7.0\Plug-ins\Datasmith Rhino Exporter (d1fdc795-b334-4933-b680-088119cdc6bb)\DatasmithRhino7.rhp “Datasmith Exporter” 5.6.1.0
C:\Users\Czaja\source\repos\GH_Controller\GH_Controller\bin\Debug\net7.0\GH_Controller.rhp “GH_Controller” 1.0.0.0
C:\Users\Czaja\AppData\Roaming\McNeel\Rhinoceros\packages\9.0\DynamicEtoPanels\1.0.9\net7.0\DynamicEtoPanels.rhp “DynamicEtoPanels” 1.0.9.0
C:\Users\Czaja\AppData\Roaming\McNeel\Rhinoceros\7.0\Plug-ins\Crayon (39629248-4fa6-47b8-83c7-745a7efea259)\1.2.0.0\Crayon\Crayon.rhp “Crayon” 1.0.0.0
C:\Users\Czaja\AppData\Roaming\McNeel\Rhinoceros\packages\9.0\BlockEditNew\2.1.5\blockeditnew.rhp “BlockEditNew” 2.0.0.0
Rhino plugins that ship with Rhino
C:\Program Files\Rhino 9 WIP\Plug-ins\Commands.rhp “Commands” 9.0.26132.12305
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” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 9 WIP\Plug-ins\MeshCommands.rhp “MeshCommands” 9.0.26132.12305
C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 9.0.26132.12305
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”