you must load this one http://moi3d.com/forum/index.php?webtag=MOI&msg=9358.1

and you can put it ​there if you have a PC (Windows) C:\Users\Your Name\AppData\Roaming\Moi\

and make a shortcut like this (only one line)
​moi.ui.createDialog( 'moi://appdata/nodeeditor/index.html', 'resizeable,defaultWidth:680,defaultHeight:420', moi.ui.mainWindow );