Hi Karsten and Marco

Make no mistake I made as well,
but perhaps it is not the proper way .......

I removed your old Node Costruct2 from the Nodeditor folder
I substitute it with the new ....
Opening the file there were problems
see attached picture ...
then at the end it seems that everything works

Pat array rewritten is cool , very flexible i Think now.........
What are the Extrude nodes, etc, etc. I do not understand the connections
you can make me a picture to understand
thank you, great

al