# Revit cannot run the external application "Rhino.Inside."

**URL:** <https://discourse.mcneel.com/t/revit-cannot-run-the-external-application-rhino-inside/185387>\
**Category:** Revit\
**Tags:** windows\
**Created:** [June 27, 2024, 10:23am UTC](https://discourse.mcneel.com/t/revit-cannot-run-the-external-application-rhino-inside/185387 "2024-06-27T10:23:51Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Krzysztof5](https://avatars.discourse-cdn.com/v4/letter/k/e9a140/32.png) [@Krzysztof5](https://discourse.mcneel.com/u/Krzysztof5)\
**Post date:** [June 27, 2024, 10:23am UTC](https://discourse.mcneel.com/t/revit-cannot-run-the-external-application-rhino-inside/185387/1 "2024-06-27T10:23:51Z")

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I’ve been having major issues with Rhino Inside Revit lately. As soon as I turn on RIR and place any component in GH, Revit crashes when I switch to 3D view. This has made it impossible to use RIR. These problems appeared after installing VisualArq, but I have exactly the same plugins installed on another PC and it never crashes.

**I reinstalled Revit 2024, even though there were some strange problems with the revit.msi file. I was only able to install version 2025, but after installing RIR, I get the following error:**

**Revit cannot run the external application “Rhino.Inside.” Please contact the provider for assistance. Information that the provider has entered into Revit about its identity:** **[Rhino.Inside®.Revit](https://www.rhino3d.com/inside/revit/1.0/)**  **.**

**System.TypeInitializationException**

**System.TypeInitializationException: The type initializer for ‘Rhinolnside.Revit.AssemblyResolver’ threw an exception.**

**—\> System.ArgumentNullException: Value cannot be null. (Parameter ‘paths’)**

**at System.ArgumentNullException.Throw(String paramName)**

**at System.IO.Path.Combine(String[] paths)**

**at Rhinolnside.Revit.AssemblyResolver … cctor0**

**— End of inner exception stack trace —**

**at Rhinolnside.Revit.AssemblyResolver.set\_Enabled(Boolean value)**

**at Rhinolnside.Revit.Core.OnStartup(UlControlledApplication uiCtrlApp)**

**at Rhinolnside.Revit.Addln.Loader.OnStartup(UlControlledApplication app)**

**at Rhinolnside.Revit.External.Ul.ExternalApplication .\< \>c\_DisplayClass10\_0 .\< Autodesk.Revit.Ul.IExternalAppl …**

**at Rhinolnside.Revit.External.ActivationGate.Open[T](Func’1 func, Object state)**

**at Rhinolnside.Revit.External.Ul.ExternalApplication.Autodesk.Revit.Ul.IExternalApplication.OnStartup(UICon … app)**

**at Rhinolnside.Revit.Addln.Loader.Autodesk.Revit.Ul.IExternalApplication.OnStartup(UlControlledApplication controlledApplication)**

_at Autodesk.Revit.Ul.RevitManagedAppStartupAgency.RevitManagedAppStartup(UlControlledApplication pControlledApplication, AString assemblyName, AString_ className, AString\* exceptionName, AString\* exceptionMessage)\*\*

**What should I do? I tried 1.22 and 1.23 RiR version. I have Rhino 7.**

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**Author:** ![Japhy](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/japhy/32/487647_2.png) [@Japhy](https://discourse.mcneel.com/u/Japhy)\
**Post date:** [June 27, 2024, 2:06pm UTC](https://discourse.mcneel.com/t/revit-cannot-run-the-external-application-rhino-inside/185387/2 "2024-06-27T14:06:40Z")

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This sounds like a plugin/plugins conflict.

> **[Rhino.Inside®.Revit](https://www.rhino3d.com/inside/revit/1.0/reference/troubleshooting#search-for-conflicting-plugins)**
>
> This guide provides ways to troubleshoot and collect information about Rhino.Inside.Revit errors. Please see Known Issues & Bugs for a list of known issues.

Another way to start troubleshooting is to open an new instance of Revit by Shift+Cntl clicking here (green dot) and selecting the first option (blue dot)

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/0/2/8/02870ebbd2d6cc5fe05f1d7115a79eef6fb6768d.png)

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**Author:** ![Krzysztof5](https://avatars.discourse-cdn.com/v4/letter/k/e9a140/32.png) [@Krzysztof5](https://discourse.mcneel.com/u/Krzysztof5)\
**Post date:** [June 27, 2024, 9:27pm UTC](https://discourse.mcneel.com/t/revit-cannot-run-the-external-application-rhino-inside/185387/3 "2024-06-27T21:27:49Z")

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Currently, I can’t open RIR. When launching Revit 2025, I receive the following error message:

Revit cannot run the external application “Rhino.Inside.” Please contact the provider for assistance. Information that the provider has entered into Revit about its identity:  
[Rhino.Inside®.Revit](https://www.rhino3d.com/inside/revit/1.0/) error

Additionally, after opening Revit, the Rhino.Inside tab is missing.

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<div class="post-metadata">

**Author:** ![Japhy](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/japhy/32/487647_2.png) [@Japhy](https://discourse.mcneel.com/u/Japhy)\
**Post date:** [June 28, 2024, 9:24pm UTC](https://discourse.mcneel.com/t/revit-cannot-run-the-external-application-rhino-inside/185387/4 "2024-06-28T21:24:26Z")

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How about the troubleshooting utility in the first link?