Hi, thanks, that line did the trick, it builds and runs now. Cheers, Rok -- View this message in context: http://vtk.1045678.n5.nabble.com/VTK-js-Using-vtk-js-as-an-ES6-dependency-example-not-working-tp5743535p5743549.html Sent from the VTK - Users mailing list archive at Nabble.com.