I am having difficulty accessing the "Instructor window accessible from within the extension" refenced in YouTube and SkechUcation for FedoSpline version 2.4. Is this a add-in or am I missing something?

Not sure how to paste a screen shot. The error message box is titled "Load Errors" with text "Error Loading File boxKKversion.rb
undefined method `GetString' for nil:NilClass"

Hope this helps.

The ruby script appears to not work in ver 7. I received a error message on load.