Grasshopper instantly crashing on MacOs BigSur


I have a 2017 MacBook Pro and have recently updated from macOS 10.14 to macOS 11.2. Since then, I can no longer use Grasshopper. Is it a known bug and do I have to downgrade or is there a workaround ?

I can launch Grasshopper but I cannot add any component to the canvas without Rhino crashing…

Thanks !


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Hi Félix - please run the Rhino SystemInfo command and copy-paste the result here.

Hi Wim, thanks for your answer, here is the result of SystemInfo.txt (5.7 KB) command :

Rhino 7 SR4 2021-3-10 (Rhino 7, 7.4.21069.13332, Git hash:master @ ccae1fd90d6c89471214a11230dcb924a2d1ed87)
License type: Educational, build 2021-03-10
License details: Cloud Zoo

Apple Intel 64-bit macOS Version 11.2.2 (Build 20D80) (Physical RAM: 16Gb)
Mac Model Identifier: MacBookPro14,3
Language: en

AMD Radeon Pro 560 OpenGL Engine (OpenGL ver:4.1 ATI-4.2.15)

OpenGL Settings
  Safe mode: Off
  Use accelerated hardware modes: On
  Redraw scene when viewports are exposed: On
  Anti-alias mode: 4x
  Mip Map Filtering: Linear
  Anisotropic Filtering Mode: High
  Vendor Name: ATI Technologies Inc.
  Render version: 4.1
  Shading Language: 4.10
  Maximum Texture size: 16384 x 16384
  Z-Buffer depth: n/a
  Maximum Viewport size: 16384 x 16384
  Total Video Memory: 4 GB
  Graphics: Radeon Pro 560
  Displays: Color LCD (295dpi 2x)

Graphics processors
  Intel HD Graphics 630 (1536 MB)
  Radeon Pro 560 (4 GB)
    Color LCD (1920 x 1200)

USB devices
  Apple Inc.: Apple T1 Controller

Bluetooth devices

Third party kernel extensions (1.40) CD50A087-0252-8C0B-7F9F-682E32D8A99E

Third party plugins
  /Users/felixchameroy/Library/Application Support/McNeel/Rhinoceros/packages/7.0/IntelDenoiser/0.6.0/libtbb.dylib
  /Users/felixchameroy/Library/Application Support/McNeel/Rhinoceros/packages/7.0/IntelDenoiser/0.6.0/libtbbmalloc.dylib

Rhino plugins that do not ship with Rhino
  /Users/felixchameroy/Library/Application Support/McNeel/Rhinoceros/packages/7.0/IntelDenoiser/0.6.0/IntelDenoiser.Mac.rhp	"IntelDenoiser.Mac"

Rhino plugins that ship with Rhino
  /Applications/	"Snapshots"	7.4.21069.1002
  /Applications/	"PanelingTools"	7.4.21069.1002
  /Applications/	"Renderer Development Kit"	7.4.21069.1002
  /Applications/	"Displacement"	7.4.21069.1002
  /Applications/	"Legacy Rhino Render"	7.4.21069.1002
  /Applications/	"Commands"	7.4.21069.13332
  /Applications/	"Import_OBJ"	7.4.21069.13332
  /Applications/	"export_xaml"	7.4.21069.13332
  /Applications/	"QuadRemesh"	7.4.21069.13332
  /Applications/	"export_OBJ"	7.4.21069.13332
  /Applications/	"RDK_EtoUI"	7.4.21069.13332
  /Applications/	"Export SVG"	7.4.21069.13332
  /Applications/	"MeshCommands"	7.4.21069.13332
  /Applications/	"Export_DAE"	7.4.21069.13332
  /Applications/	"PDF Export"	7.4.21069.13332
  /Applications/	"IGES Export Plug-in"	7.4.21069.13332
  /Applications/	"Import_SVG"	7.4.21069.13332
  /Applications/	"BlockEdit"	7.4.21069.13332
  /Applications/	"Export_AMF"	7.4.21069.13332
  /Applications/	"Rhino Render"	7.4.21069.13332
  /Applications/	"Import_DST"	7.4.21069.13332
  /Applications/	"PLY - Polygon File Format Export"	7.4.21069.13332
  /Applications/	"Import_AMF"	7.4.21069.13332
  /Applications/	"RhinoCycles"	7.4.21069.13332
  /Applications/	"IronPython"	7.4.21069.13332
  /Applications/	"Grasshopper"	7.4.21069.13332


Hi Félix -

Thanks for that - nothing that strikes me in that one.
Does this happen with any of the components that you place on the canvas or only specific ones?
I’m not seeing any crash reports from your eMail address. Are you sending in those reports?

Well I didn’t send all of them, but yeah quite a few.
For now, I haven’t been able to put a single component - tried with the simplest ones, params like Point, Curve, or Surface, or constructor ones like XYZ Point, Line 2Pt.

Hi @wim, I have no idea what weird was inside my Application Support folder, but I wanted to make a clean install of rhino and deleted it before reinstalling rhino, and now everything works back fine.

If it can be of use, the tiles of the starting screen of GH were showing a weird regular-Times-New-Roman-like font, instead of the usual bold-Arial-like font.

Thanks for your help.



Hello I have the same problem, is there a solution? I cannot use GH in my Mac.

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