Hi @mostapha, I got an error message when I clicked the “Options” button in Rhino.Inside.Revit this morning. Disabling the Pollination revit plugin resolved the issue. @jakechevriersg confirmed that he also got the same error message. I have version 2.124.0 for Pollination and version 1.12.8449 for RiR.
Hi, @dongyeop - Great to see you on the Pollination discourse. 
I created a new topic here so we can keep track of it separately.
@ksobon, do you know why this might be happening even though we added an additional check?
@mingbo, can we update the dependencies not to have a conflict?
I reported this bug here as well:
Posting an update here.
With the help from @eirannejad and the McNeel team, this issue has been resolved. If you install RiR Release Candidate (1.24.9019.19949) or later you will be able to open RhinoInside Revit.
You will still see issues with loading the Pollination plugins in Rhino but that is a different topic that we might work on in the future. The issue is we don’t use the exact same versions of the dependencies for the Rhino and Revit plugins.