Rhino.Inside won't install

Rhino.Inside Revit
,
1

Hi,
I am encountering a complete fail when trying to install Rhino.Inside.
I get a dialog box that says the following:

External Tools - External Tool Failure

Revit cannot run the external application “Rhino.Inside”. Contact the provider for assistance. Information they provided to Revit about their identity: Rhino.Inside®.Revit

System.TypeInitializationException

System.TypeInitializationException: The type initializer for ‘RhinoInside.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 RhinoInside.Revit.AssemblyResolver…cctor()
— End of inner exception stack trace —
at RhinoInside.Revit.AssemblyResolver.set_Enabled(Boolean value)
at RhinoInside.Revit.Core.OnStartup(UIControlledApplication uiCtrlApp)
at RhinoInside.Revit.AddIn.Loader.OnStartup(UIControlledApplication app)

at RhinoInside.Revit.External.UI.ExternalApplication.<>c__DisplayClass10_0.<Autodesk.Revit.UI.IExternalApplication.OnStartup>b__0()
at RhinoInside.Revit.External.ActivationGate.Open[T](Func`1 func, Object state)
at RhinoInside.Revit.External.UI.ExternalApplication.Autodesk.Revit.UI.IExternalApplication.OnStartup(UIControlledApplication app)

at Autodesk.Revit.AddIn.Loader.Autodesk.Revit.UI.ExternalApplication.OnStartup(UIControlledApplication controlledApplication)

at Autodesk.Revit.UI.RevitManagedAppStartupAgency.RevitManagedAppStartup(UIControlledApplication uiControlledApplication, AString assemblyName, AString className, AString exceptionName, AString exceptionMessage)

Can anyone assist here? Thank you!

2

Hi Robert,

This is most likely plugin conflict, but will need more info to be sure.

What version of Revit, Rhino & Rhino.Inside.Revit are your installing?

3

Hi Japhy,
Thank you for the response:

RhinoInside.Revit_1.22.8962.17228

Revit
25.2.0.38
20240715_1515(x64)
2025.2

Rhino 7

4

Rhno 7 Educational btw

5

Version 7 SR37
(7.37.24107.15001, 2024-04-16)
Educational

6

Rhino 7 is not compatible with Revit 2025, they changed their .net version to .NetCore8, we were able to get Rhino 8 going (.NetCore 7) but Rhino 7 (.netframework 4.8) is a bridge too far.

7

Ah - ok. Is that an educational licence issue, or can we upgrade to 8?

8

Or conversely, is there a compatible version of Revit? (If we can downgrade that).

9

Educational licenses are fully functional. You can use a 90 day trial or upgrade your Edu license to Rhino 8.

Rhino 7 (and 8) is compatible with Revit 2018-24. There are issue starting to pop up in the older versions of Revit, we recommend Revit 2022+

10

Got it - my daughter (lic holder) said Rhino doesn’t upgrade. (I dont use it - I’m just finance support :slight_smile: )

11

Ok - thank you very much for the help and suggested options.