"HOPs failed to deserialize itself"

Grasshopper Hops
1

Dear all,

I encountered some issues with HOPs that it ‘failed to deserialize itself’ - and the HOPs component is removed from the Grasshopper canvas.

Has anyone encountered this and found any solution to it? Below I attached the error message from GH as well as the system and version info.

Rhino version: 8.24; GH version: 1.0.0008; HOPs version: 0.16.27

Error message from Grasshopper

info: Plugin version: 1.0.0008
error: Object ‘Hops’ {c69bb52c-88ba-4640-b69f-188d111029e8} failed to deserialize itself: One or more errors occurred. (A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. (bsl-br01-2492:5000))
info: Object list read

image
image1199×1097 59.3 KB

System info and Rhino version

Rhino 8 SR24 2025-10-8 (Rhino 8, 8.24.25281.15001, Git hash:master @ ba28668a8431990c700173e46ef2dbcb873cf092)
License type: Commercial, build 2025-10-08
License details: Cloud Zoo

Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 128GB)
.NET 8.0.21

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 5070 (NVidia) Memory: 12GB, Driver date: 6-24-2025 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 576.88

Accelerated graphics device with 4 adapter port(s)

  • Secondary monitor attached to adapter port 0
  • Windows Main Display attached to adapter port 1

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: 6-24-2025
Driver Version: 32.0.15.7688
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 12227 MB

Rhino plugins that do not ship with Rhino

C:\ProgramData\Beam\App\netcore\Rhino\RHINOBEAM.dll “MKS BEAM” 1.12.0.4
C:\ProgramData\McNeel\Rhinoceros\packages\8.0\LadybugTools\1.39.7\net8.0-windows\Ladybug.RH.Loader.rhp “Ladybug.RH.Loader” 1.39.7.0
C:\ProgramData\McNeel\Rhinoceros\packages\8.0\Pollination\1.65.21\net8.0-windows\Pollination.RH.Loader.rhp “Pollination.RH.Loader” 1.65.21.0
c:\Program Files\Solemma\ClimateStudioRhino\Plugin\ClimateStudio.Rhino8.rhp “ClimateStudioRhino8” 2.2.9338.29724

3

Hi. Sorry for the trouble. Are you able to upload the Grasshopper definition that you’re trying to load which throws this error? It would be best if you could also include the base Grasshopper definition (i.e. the one that is being referenced from the Hops component) as well. Does this happen on all of your Hops definitions? Or just this one?