# GH2 Bug : Area and Volume Centroid "Process Error"

**URL:** <https://discourse.mcneel.com/t/gh2-bug-area-and-volume-centroid-process-error/219808>\
**Category:** Grasshopper2\
**Tags:** windows\
**Created:** [June 10, 2026, 12:48pm UTC](https://discourse.mcneel.com/t/gh2-bug-area-and-volume-centroid-process-error/219808 "2026-06-10T12:48:45Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![flixchameroy](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/flixchameroy/32/540973_2.png) [@flixchameroy](https://discourse.mcneel.com/u/flixchameroy)\
**Post date:** [June 10, 2026, 12:48pm UTC](https://discourse.mcneel.com/t/gh2-bug-area-and-volume-centroid-process-error/219808/1 "2026-06-10T12:48:45Z")

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Hi,

Some weird error with the Area and Volume Centroid components : they only work if Grasshopper1 is loaded in the background.

To reproduce :

- Start RhinoWIP
- Launch Grasshopper2
- Place a Centroid or VolumeComponent → Process Error
- Launch Grasshopper1
- Reload Solver → No more error

 ![Process Error when GH1 is not loaded.](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/7/9/9/79902c2c4a62b84511ba9cbb87cc16f3b1f44d85.jpeg)

 ![GH1 is loaded : no more Process Error, area and volume are properly evaluated.](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/1/7/b/17bc89d3fe6efa3693be72e5bf50485224cc8353.png)

PS : the components seems to work without GH1 for some geometries, like pure circles or rectangle created in GH2

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**Author:** ![wim](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/wim/32/747482_2.png) [@wim](https://discourse.mcneel.com/u/wim)\
**Post date:** [August 10, 2026, 8:07pm UTC](https://discourse.mcneel.com/t/gh2-bug-area-and-volume-centroid-process-error/219808/2 "2026-08-10T20:07:50Z")

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Hi Felix -

> [@flixchameroy](#):
>
> Some weird error with the Area and Volume Centroid components : they only work if Grasshopper1 is loaded in the background.

As mentioned in a different thread, I’ve reported this issue with the Volume Centroid component. I have not been able to reproduce this with the Area Centroid component. Are you still see this? If so, please post a sample file.  
-wim

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<div class="post-metadata">

**Author:** ![flixchameroy](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/flixchameroy/32/540973_2.png) [@flixchameroy](https://discourse.mcneel.com/u/flixchameroy)\
**Post date:** [August 13, 2026, 7:25am UTC](https://discourse.mcneel.com/t/gh2-bug-area-and-volume-centroid-process-error/219808/3 "2026-08-13T07:25:21Z")

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Hi @wim,

I would say the contrary.. With latest Beta, Volume Centroid seems to work, but Area Centroid not. With last week’s Beta, none of these would compute.

 ![Rhino - Screenshot 2026-08-13 09.20.34](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/9/5/5/9550b66bc9925c632fc84c403d1fda98289eb0fc.jpeg)  
Here is a file, but I really didn’t do anything fancy. [CentroidBug.ghz](https://discourse.mcneel.com/uploads/short-url/sE2gHwrR4EPksjjQrfM3DnGiDxZ.ghz) (348.0 KB)

> **SystemInfo**
>
> Rhino 9 SR0 2026-8-11 (Rhino 9 BETA, 9.0.26223.12303, Git hash:master @ 535bf21f011dc805eafa540606c59272f4f15b11) License type: Educational Lab License, version 2026-08-11 License details: Cloud Zoo Expires on: 2026-09-25
> 
> Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 16GB)  
> .NET 10.0.9
> 
> Computer platform: LAPTOP - Plugged in [67% battery remaining]
> 
> Non-hybrid graphics configuration using DirectX  
> Primary display: Radeon Pro 560 (AMD) Memory: 4GB, Driver date: 8-19-2024 (M-D-Y). DirectX(11)  
> \> Integrated accelerated graphics device with 6 adapter port(s)  
> - Windows Main Display is laptop’s integrated screen or built-in port
> 
> Secondary graphics devices.  
> None found.
> 
> 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:\Users\Felix\AppData\Roaming\McNeel\Rhinoceros\packages\9.0\Karamba3D\3.1.60519\net8.0-windows\Karamba3D\_LicensePlugin\_Rhino8.rhp “Karamba3DLicense”
> 
> Rhino plugins that ship with Rhino  
> C:\Program Files\Rhino 9 WIP\Plug-ins\Commands.rhp “Commands” 9.0.26223.12303  
> C:\Program Files\Rhino 9 WIP\Plug-ins\rdk.rhp “Renderer Development Kit”   
> C:\Program Files\Rhino 9 WIP\Plug-ins\3dxRhino.9.rhp “3DxRhino.9”   
> C:\Program Files\Rhino 9 WIP\Plug-ins\UpdatesAndStatistics\UpdatesAndStatistics.rhp “UpdatesAndStatistics” 9.0.26223.12303  
> C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoRenderCycles.rhp “Rendu de Rhino” 9.0.26223.12303  
> C:\Program Files\Rhino 9 WIP\Plug-ins\rdk\_etoui.rhp “RDK\_EtoUI” 9.0.26223.12303  
> C:\Program Files\Rhino 9 WIP\Plug-ins\NamedSnapshots.rhp “Snapshots”   
> C:\Program Files\Rhino 9 WIP\Plug-ins\MeshCommands.rhp “MeshCommands” 9.0.26223.12303  
> C:\Program Files\Rhino 9 WIP\Plug-ins\Grasshopper2\net48\Grasshopper2Plugin.rhp “Grasshopper2” 9.0.26223.12303  
> C:\Program Files\Rhino 9 WIP\Plug-ins\RhinoCycles.rhp “RhinoCycles” 9.0.26223.12303  
> C:\Program Files\Rhino 9 WIP\Plug-ins\Displacement.rhp “Displacement”   
> C:\Program Files\Rhino 9 WIP\Plug-ins\SectionTools.rhp “SectionTools”

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<div class="post-metadata">

**Author:** ![wim](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/wim/32/747482_2.png) [@wim](https://discourse.mcneel.com/u/wim)\
**Post date:** [August 25, 2026, 7:09am UTC](https://discourse.mcneel.com/t/gh2-bug-area-and-volume-centroid-process-error/219808/4 "2026-08-25T07:09:20Z")

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Hi Felix -

> [@flixchameroy](#):
>
> Here is a file, but I really didn’t do anything fancy. [CentroidBug.ghz](https://discourse.mcneel.com/uploads/short-url/sE2gHwrR4EPksjjQrfM3DnGiDxZ.ghz) (348.0 KB)

This one computes correctly here when testing the fix that should become publicly available this evening.  
 → [RH-97680](https://mcneel.myjetbrains.com/youtrack/issue/RH-97680) Grasshopper 2: Volume Failure  
-wim

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<div class="post-metadata">

**Author:** ![flixchameroy](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/flixchameroy/32/540973_2.png) [@flixchameroy](https://discourse.mcneel.com/u/flixchameroy)\
**Post date:** [August 26, 2026, 9:34am UTC](https://discourse.mcneel.com/t/gh2-bug-area-and-volume-centroid-process-error/219808/5 "2026-08-26T09:34:26Z")

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Hi Wim, I confirm this bug is fixed on my side, thanks !