Hi Ditto, it looks like one of the extensions in your version requires MoI v4 or higher.

If it's otherwise running ok then just don't try to use the Delaunay node.

You might try removing nodes\extensions\delaunay.js and see if it then goes away.

- Michael

Thank you, Michael.

That works, no more error message. And if more like these pop up, I now know what to look for.

@+