Grasshopper display issues: black canvas

Grasshopper
,
1

I open grasshopper in the latest version of Rhino 8, appears normal, but then goes black when starting to add parameters. I have attached a screenshot.

Running on Windows 10 and

Grasshopper
Grasshopper1141×847 66.7 KB

I have the latest graphic drivers, etc.

It has not affected any other software’s nor the Rhino viewport windows.

Rhino System Info:

Rhino 8 SR24 2025-10-8 (Rhino 8, 8.24.25281.15001, Git hash:master @ ba28668a8431990c700173e46ef2dbcb873cf092)
License type: Educational, build 2025-10-08
License details: Stand-Alone

Windows 10 (10.0.19045 SR0.0) or greater (Physical RAM: 64GB)
.NET 8.0.14

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 2080 Ti (NVidia) Memory: 11GB, Driver date: 10-9-2025 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 581.57
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0

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: 10-9-2025
Driver Version: 32.0.15.8157
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 11 GB

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
C:\\Program Files\\Rhino 8\\Plug-ins\\Commands.rhp	“Commands”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\rdk.rhp	“Renderer Development Kit”	
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoRenderCycles.rhp	“Rhino Render”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\rdk_etoui.rhp	“RDK_EtoUI”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\NamedSnapshots.rhp	“Snapshots”	
C:\\Program Files\\Rhino 8\\Plug-ins\\MeshCommands.rhp	“MeshCommands”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\IronPython\\RhinoDLR_Python.rhp	“IronPython”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\RhinoCycles.rhp	“RhinoCycles”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\Grasshopper\\GrasshopperPlugin.rhp	“Grasshopper”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\Toolbars\\Toolbars.rhp	“Toolbars”	8.24.25281.15001
C:\\Program Files\\Rhino 8\\Plug-ins\\3dxrhino.rhp	“3Dconnexion 3D Mouse”	
C:\\Program Files\\Rhino 8\\Plug-ins\\Displacement.rhp	“Displacement”	
C:\\Program Files\\Rhino 8\\Plug-ins\\Calc.rhp	“Calc”	
C:\\Program Files\\Rhino 8\\Plug-ins\\SectionTools.rhp	“SectionTools”
2

Hi Nicholas,

Let’s troubleshoot by opening Rhino in SafeMode, then open grasshopper via the Rhino command line with GrasshopperLoadOneByOne and say no to 3rd party GH plugins. The first 13 are shipped with Rhino if i recall.

3

When I open Rhino 8 in Safe Mode:

01
01414×165 2.89 KB

when I run GrasshopperLoadOneByOne:

03
03408×280 7.11 KB

I selected yes.

I then tried two variations by closing Rhino and repeated all prior steps:

  1. no to all remaining. same black canvas result.
  2. yes to all remaining. same black canvas result.
4

To confirm, you are getting normal canvas color at first, but after placing one component it turns black, regardless if in safemode?

5

Yes, this is what I see:

01
011134×839 88.5 KB

02
021134×839 55.5 KB
03
031134×839 55.7 KB

6

This continues to look like a plugin conflict of some sort. The older honeybee/ladybug might need to run in .netframework.

To start Rhino in .NET Framework once:

Caution: only recommended if you have a plug-in that doesn’t run in .NET Core.

  1. Create a new shortcut for Rhino in Windows
  2. Edit the shortcut
  3. Add command line argument /netfx

image
image866×109 42.5 KB

8

It has not worked…

I eventually uninstalled and reinstalled Rhino. Still the same…

Please help.

9

Here i successfully turned my canvas black. <item name=“canvas_backcolor”

%AppData%\Grasshopper\grasshopper_gui.xml

image
image888×548 36.7 KB

Closing Rhino and deleting the file before reopening reset to defaults.