This is a cross-post from the McNeel discourse forum, explaining an issue which we believe we have traced to Enscape.
When RhinoInside is used to open a particular rhino file (within the context of a Rhino Inside Revit session), it causes Revit to crash. The only solution currently is disabling Enscape in Rhino 7.
Info from that post..
Revit version is: 2021.1.3
Enscape version (revit) is: 3.1.2 +55592, build date 9/7/2021 08:10 UTC
Rhino version is: R7 SR12 (7.12.21313.6341, 2021-11-09)
Enscape version (rhino) is: 0.0.21250.810
Please let me know if there is other information which would be helpful to have.