Hi there! I was using the Hops component in grasshopper with localy saved grasshopper scripts. The plugin works nicely on RH8 SR13 from my experience. But it doesnt work on SR16 or SR17. This is the error message on the hops component: “1. Path appears valid, but to something that is not Hops rel…

Hmm. Ok. Weird. The next thing to try is to > modify %AppData%\McNeel\Rhinoceros\packages\8.0\Hops\0.16.18\compute.geometry\computeg.geometry.runtimeconfig.json file so that it matches the ASP.NET 8.x version that you have installed. Just open that file and replace all of the locations that point to…

Can you post a screenshot of the Rhino.Compute console output to see if it’s telling you why you might be running into this issue?

Hi, I revisited it. But it still doesnt work: [01] [hops file] hops version: 0.16.23 Rhino 8 SR18 Windows 10 Home Thank you. Have a nice day. Vratislav

Right. But can you take a screenshot of the actual Rhino.Compute console window? You may need to go to the Hops preferences section and unselect the option to hide the Rhino.Compute console window on startup. Please see this guide: Rhino - The Hops Component

Hi, This is the screenshot: RC [09:25:03 ERR] HTTP POST /io responded 500 in 34141.8268 ms System.Exception: Unable to start a local compute server at rhino.compute.ComputeChildren.LaunchCompute(Queue1 processQueue, Boolean waitUntilServing) in D:\BuildAgent\work\4852f584398a78e4\src\rhino.compu…

We’re getting closer. Would it be possible to copy the entire text output of the Rhino.Compute console window? Or take a screenshot of the stuff that happens prior to you sending a request from Hops? I’m wondering if there are any error messages that would explain why compute isn’t starting correctl…

Hi, I followed this guide with installation initially. I am trying to run the most simple example script locally. I think this time the error is different. This is the procedure: 1.Launch Rhino 2.Launch Grasshopper 3.Put hops component on canvas, assign a grasshopper definition to it from my di…

[image.png] I tried this command in windows čt 17. 4. 2025 v 13:15 odesílatel Andy Payne via McNeel Forum < notifications@mcneel.discoursemail.com > napsal:

Ok. You’re missing the ASP.NET Runtime for 7.0.20. Try downloading this from here and restarting everything. Download ASP.NET Core 7.0 Runtime (v7.0.20) - Windows x64 Installer

I tried it on my notebook. I installed the .NET 7.0.20, restarted my computer two times, but still no luck. [image.png] čt 17. 4. 2025 v 16:11 odesílatel Andy Payne via McNeel Forum < notifications@mcneel.discoursemail.com > napsal:

Finally it works! I just changed the version 7.0.0 to 8.0.10 in the json file. Thank you a lot. I appreciate the effort. Best Regards, Vratislav [image]

Grasshopper Hops doesn't work on RH8 SR17

Rhino Developer compute.rhino3d

vraruzek (Vraruzek) April 16, 2025, 11:59pm 10

I tried it on my notebook.
I installed the .NET 7.0.20, restarted my computer two times, but still no luck.

čt 17. 4. 2025 v 16:11 odesílatel Andy Payne via McNeel Forum <notifications@mcneel.discoursemail.com> napsal:

Stuck on the "Path appears valid" error

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Grasshopper Hops doesn't work on RH8 SR17

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