Hello Pixelhouse,

in 99% the Problem is a wrong shortcut "moi.ui.createDialog( 'nodeeditor/index.html'," has to point exactly to the folder e.g. C:\Program Files (x86)\moi3d\ui\nodeeditorv10rc3 so in this example:

moi.ui.createDialog( 'nodeeditorv10rc3/index.html', .......

it is also possible to install under your user-AppData for V4 - http://moi3d.com/forum/index.php?webtag=MOI&msg=7713.767

Hope that helps - if not make some screenshots of your Folders!

Have a nice day
Karsten