@Bemfarmer

<< 1. Placed Pilou's lang.js file in the core subdirectory, after renaming the older lang.js file to langOlder.js

<< 2. Changed EN to FR in the index.html under function init(), (As per Max's initFR.PNG), with notepad++, in the nodeeditor directory.

<< Success

Seems you don't change "EN" to "FR" inside my lang.js file posted : var lang = { LANGUAGE: "EN" } does this exact ?