Hello everyone,
I also report the same issue.
When I open Grasshopper in Rhino 7, I get the IronPython loading error message. I also have Rhino 6 and I don’t have the issue.
If I open Grasshopper in Rhino.Inside.Revit, the error message is gone, and using GhPython component works just fine.
I followed @emmanuel1’s process, opening Rhino Python Editor first before opening Grasshopper, and the issue is gone. I have to repeat this process every time I use GhPython component. My colleague gets the same issue.