Grasshopper Loading Error - Asmbl_Priority Failed to load language IronPython

Hi All,

I started receiving this error about two weeks ago. I haven’t been able to pinpoint what caused it.

GH_Load_Ex.txt (232 Bytes)

Here is the text so this post is searchable:

Priority: Asmbl_Priority
Failed to load language ‘IronPython 2.7.2’: Method not found: ‘Void IronPython.Runtime.PythonModuleAttribute…ctor(System.String, System.Type, System.PlatformID)’.

Grasshopper had appeared to be working fine even though I received the error so I just drove over it… but now it is actually stopping me from getting things done.

I am now unable to use basic python commands like sort:

Here is that example file: (4.6 KB)

Here is my Rhino version:
Version 6 SR22
(6.22.20028.13281, 01/28/2020)

I am currently running the update. I’ll reply if that solves it.

I just ran the update and I still receive the error.

System info:
Rhino 6 SR22 2020-1-28 (Rhino 6, 6.22.20028.13281, Git hash:master @ 379871ece695dc096e83826f08b429db8ca2e7f5)
License type: Educational, build 2020-01-28
License details: Cloud Zoo. In use by: Alexander Jacobson ()

Windows 10.0 SR0.0 or greater (Physical RAM: 64Gb)
Machine name: CPH-PC0063

Non-hybrid graphics.
Primary display and OpenGL: NVIDIA GeForce GTX 1080 (NVidia) Memory: 8GB, Driver date: 10-24-2019 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 441.12

Secondary graphics devices.
Intel® UHD Graphics 630 (Intel) Memory: 1GB, Driver date: 9-25-2019 (M-D-Y).

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: Height

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 10-24-2019
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 8 GB

Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.22.20028.13281
C:\Program Files\Rhino 6\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 6\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 6\Plug-ins\RPC.rhp “RPC”
C:\Program Files\Rhino 6\Plug-ins\RhinoBonusTools.rhp “Rhino Bonus Tools”
C:\Program Files\Rhino 6\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.22.20028.13281
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 6\Plug-ins\Alerter.rhp “Alerter”
C:\Program Files\Rhino 6\Plug-ins\IronPython\RhinoDLR_Python.rhp “IronPython” 6.22.20028.13281
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.22.20028.13281
C:\Program Files\Enscape\Bin64\Enscape.Rhino6.Plugin.dll “Enscape.Rhino.Plugin” 2.5.19140.1228
C:\Program Files\Rhino 6\Plug-ins\Grasshopper\GrasshopperPlugin.rhp “Grasshopper” 6.22.20028.13281
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.22.20028.13281
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 6\Plug-ins\NamedPositions.rhp “Named Position”

As happens, I solved the problem myself eventually. In this case it was with the Volvox plugin:

As soon as I removed these files from the Libraries folder, the error disappeared:

It is very strange that this broke a basic IronPython command like sort(). Something with the implementation here must be amiss.

Just wanted to let the guys at Volvox plugin for Grasshopper know-- @MateuszZwierzycki and Henrik Evers*

1 Like

I had a similar error window after loading Grasshopoper :
Priority: Asmbl_Priority
No module named subprocess

I deleted Volvox and it looks like its fine now.