# Grasshopper Loading Errors In Rhino 8

**URL:** <https://discourse.mcneel.com/t/grasshopper-loading-errors-in-rhino-8/176638>\
**Category:** Rhino\
**Tags:** windows\
**Created:** [February 26, 2024, 8:22pm UTC](https://discourse.mcneel.com/t/grasshopper-loading-errors-in-rhino-8/176638 "2024-02-26T20:22:06Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![MSAwan](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/msawan/32/769553_2.png) [@MSAwan](https://discourse.mcneel.com/u/MSAwan)\
**Post date:** [February 26, 2024, 8:22pm UTC](https://discourse.mcneel.com/t/grasshopper-loading-errors-in-rhino-8/176638/1 "2024-02-26T20:22:06Z")

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Hello Everyone,  
I have upgraded my Rhino License from Rhino 7 to Rhino 8. When I launch the Grasshopper I receive the following error. Any idea how to resolve this error?

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/4/f/e/4feef85bd138da3f534b3873c6eed414f9e8ec73.jpeg)

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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:** [February 27, 2024, 10:39am UTC](https://discourse.mcneel.com/t/grasshopper-loading-errors-in-rhino-8/176638/2 "2024-02-27T10:39:16Z")

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Hi Muhammad -

> [@MSAwan](#):
>
> When I launch the Grasshopper I receive the following error.

When you use the Rhino `SetDotNetRuntime` command to switch to `NETFramework`, and restart Rhino, does the error go away?  
-wim

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<div class="post-metadata">

**Author:** ![MSAwan](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/msawan/32/769553_2.png) [@MSAwan](https://discourse.mcneel.com/u/MSAwan)\
**Post date:** [February 27, 2024, 10:51am UTC](https://discourse.mcneel.com/t/grasshopper-loading-errors-in-rhino-8/176638/3 "2024-02-27T10:51:52Z")

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Hello wim,

Can you please elaborate the steps?

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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:** [February 27, 2024, 11:00am UTC](https://discourse.mcneel.com/t/grasshopper-loading-errors-in-rhino-8/176638/4 "2024-02-27T11:00:42Z")

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Hi Muhammad -

> [@MSAwan](#):
>
> Can you please elaborate the steps?

Here are those steps:

- Close all but one instance of Rhino
- Run `SetDotNetRuntime`
- On the command line, click on the `Runtime=NETCore` option:  
 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/b/3/a/b3a46e3944d1347888f3c5dea1b48c5254f70488.png)
- Click on the `NETFramework` option:  
 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/5/4/a/54a32933878698e480314593f07dc9b5afaba52e.png)
- Click OK in the pop-up:  
 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/1/4/1/1416fa18f3193245460b9ce14fb1b2b7cec65ddc.png)
- Exit Rhino and launch Rhino
- Run `Grasshopper`

-wim

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<div class="post-metadata">

**Author:** ![MSAwan](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/msawan/32/769553_2.png) [@MSAwan](https://discourse.mcneel.com/u/MSAwan)\
**Post date:** [February 27, 2024, 9:46pm UTC](https://discourse.mcneel.com/t/grasshopper-loading-errors-in-rhino-8/176638/5 "2024-02-27T21:46:38Z")

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> [@wim](#):
>
> SetDotNetRuntime

Thank you very much, Wim. It worked 🙂

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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:** [February 28, 2024, 1:28pm UTC](https://discourse.mcneel.com/t/grasshopper-loading-errors-in-rhino-8/176638/6 "2024-02-28T13:28:14Z")

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Hi Muhammad -

> [@MSAwan](#):
>
> It worked

That’s good, of course, but it isn’t necessarily a solution. Especially not in the long run.

When new plug-ins - or new versions of existing plug-ins, are written to target new features in the .NET Core 7 runtimes, they will fail to run when you are running Rhino in the .NET Framework 4.8 runtime. If you have identified which plug-in failed to load in Core, you should contact the developer and request an update of the plug-in.  
-wim