Could not add references to assembly IronPython.Wpf

[onomou (Steven Williams)]

Probably related post, indicates an issue with .NET:

Using pyRevit in RevitPythonShell

Hi all, I’m having trouble importing pyrevit inside of the revit python shell. I get the following errors: [Capture] As per this forum post, I’m attempting to add in the path to pyrevit library: [Capture1] Any hint as to what might be going on would be appreciated! Thanks in advance. Some other potentially useful details: Utilizing pyRevit tools from the toolbar seems to work just fine In Revit 2021