"Sand dune/Medial Axis" not working anymore

I´m working since months with Laurent DELRIEU´s great “Sand dune” grasshopper definition:

Since the newest Rhino 7 mac update it gives me very wrong shapes like seen in the images. This is the base-file of LaurentDelrieu and I havent made any changes. Is there something wrong with the C# component?

It´s so sad because this plugin worked very very reliable…

Edit: Moved to Grasshopper/ Mac

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…this Version does work for me:


I think because it´s the version that only uses normal components and no c#…

I am looking at this problem.
Between the Grasshopper version ans C# I no more use the boundary volume, because I had problem with it.