Xeolabs SceneJS → V0.7.3

Does this sort of anonymous function returning an array still work?

Something about errorBackend is not defined.

My code is something like this, nested inside a SceneJS.materials():

(function() {

   var row = [];
   for (var i = 0; i < 4; i++) {
           row.push(
                   SceneJS.translate({ x: map[i].x+map[i].width/2, y: map[i].y+map[i].height/2 },
                           SceneJS.scale({x: map[i].width, y: map[i].height, z: 2.0},
                                   SceneJS.objects.cube()
                           ) // scale
                   ) // translate
           );
   }
   return row;

})() // Anon

although simpler code (below) gives the same error.

[ SceneJS.objects.cube(), SceneJS.objects.cube() ]

(Using Minefield/3.7a5pre with SceneJS 0.7.2)