Editing Rhino block doesn't update Grasshopper reference

Rhino Rhino for Windows
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1

A referenced block instance in grasshopper doesn’t automatically see updates to the block geometry or basepoint changes until the block instance is moved.

Rhino 8 SR19 2025-4-15 (Rhino 8, 8.19.25105.15001, Git hash:master @ d23526bd801a5638a914a9429fe88efcd4a87fe9)
License type: Commercial, build 2025-04-15
License details: LAN Zoo Network Node

Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 64GB)
.NET 7.0.20

Computer platform: DESKTOP 

Standard graphics configuration.
  Primary display and OpenGL: NVIDIA RTX 2000 Ada Generation (NVidia) Memory: 16GB, Driver date: 9-10-2024 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 556.39
    > Accelerated graphics device with 4 adapter port(s)
        - Windows Main Display attached to adapter port #0
        - Secondary monitor attached to adapter port #1

Secondary graphics devices.
   Intel(R) UHD Graphics 770 (Intel) Memory: 2GB, Driver date: 9-13-2024 (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: 9-10-2024
  Driver Version: 32.0.15.5639
  Maximum Texture size: 32768 x 32768
  Z-Buffer depth: 24 bits
  Maximum Viewport size: 32768 x 32768
  Total Video Memory: 16380 MB

Rhino plugins that do not ship with Rhino

Rhino plugins that ship with Rhino
  C:\Program Files\Rhino 8\Plug-ins\Commands.rhp	"Commands"	8.19.25105.15001
  C:\Program Files\Rhino 8\Plug-ins\WebBrowser.rhp	"WebBrowser"	
  C:\Program Files\Rhino 8\Plug-ins\rdk.rhp	"Renderer Development Kit"	
  C:\Program Files\Rhino 8\Plug-ins\RhinoScript.rhp	"RhinoScript"	
  C:\Program Files\Rhino 8\Plug-ins\IdleProcessor.rhp	"IdleProcessor"	
  C:\Program Files\Rhino 8\Plug-ins\RhinoRenderCycles.rhp	"Rhino Render"	8.19.25105.15001
  C:\Program Files\Rhino 8\Plug-ins\rdk_etoui.rhp	"RDK_EtoUI"	8.19.25105.15001
  C:\Program Files\Rhino 8\Plug-ins\NamedSnapshots.rhp	"Snapshots"	
  C:\Program Files\Rhino 8\Plug-ins\MeshCommands.rhp	"MeshCommands"	8.19.25105.15001
  C:\Program Files\Rhino 8\Plug-ins\IronPython\RhinoDLR_Python.rhp	"IronPython"	8.19.25105.15001
  C:\Program Files\Rhino 8\Plug-ins\RhinoCycles.rhp	"RhinoCycles"	8.19.25105.15001
  C:\Program Files\Rhino 8\Plug-ins\Grasshopper\GrasshopperPlugin.rhp	"Grasshopper"	8.19.25105.15001
  C:\Program Files\Rhino 8\Plug-ins\Toolbars\Toolbars.rhp	"Toolbars"	8.19.25105.15001
  C:\Program Files\Rhino 8\Plug-ins\3dxrhino.rhp	"3Dconnexion 3D Mouse"	
  C:\Program Files\Rhino 8\Plug-ins\BlockEdit.rhp	"BlockEdit"	8.19.25105.15001
  C:\Program Files\Rhino 8\Plug-ins\Displacement.rhp	"Displacement"	
  C:\Program Files\Rhino 8\Plug-ins\SectionTools.rhp	"SectionTools"
2

If the goal is to rack object in view, I would use the Model Object menu. There is the model Object to track a Block instance.

image
image690×1325 121 KB

The older Block definition is not tracking the same way. I would need to check on that to see why it is different. But the model object param should work like you expect.

3

If I use the model object param, then it breaks the reference entirely when I edit the block.

4

Ahh yeah, ok, I see there is a refresh issue. it is not throwing a Grasshopper event to refresh. Moving the object is not needed, just a GH resolve. But that would be a bug.

I have been using a new block editor recently that is really cool. I have found it also avoids this problem. You may want to try it: Block Edit New | Food4Rhino

I know a number of people have been really happy with it.

5

RH-87467 is fixed in Rhino 8 Service Release 22