Run time error on component [set scribble properties] - Metahopper

Any suggestion what causes the error on [set scribble properties] after a file is closed and reopened?
Although the selected scribbles are linked I get the run time error bellow, after reopening the file.
“1. Invalid cast: String » Scribble”
The only way to make the component active again is to set a new link ie. select again a scribble.
I would like to automate the process with a number of distributed scribbles arround the canvas so the error makes it impossible.

  • by the way…Thank you for these amazing tools that make Grasshopper better to use.