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

Rhino.Inside Revit
1

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 .

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.

2

This sounds like a plugin/plugins conflict.

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)

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3

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 error

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

4

How about the troubleshooting utility in the first link?