When clicking for Macro in MoI3 nodeeditor, I had the same error message as klaudio, with slightly different line numbers. (Windows 10)
After modifying main.js in MoI3 nodeeditor program, (C:\Program Files x86...) with Michaels mode code, (two comment outs and an added line,),
the Macro menu seems to be working. (very Limited testing).

After backing up the above mentioned main.js file, the modification was done in NotePad++.
The commented out lines were numbers 4481 and 4482, with new line added at line 4483.
To fine the line numbers, the NotePad++ command Ctrl+H (extremely useful) was used with Replace/Find What : "var dir"

I guess that probably the nodeeditor macro "path incompatibility" with MoI 3 was introduced by Max's upgrade last winter/January+/-.
Since I use MoI4 beta now, and rarely MoI3, I had not noticed the error message.

Thanks Michael

- Brian