Cuando intenta agregar un enlace a unObjectController no funciona

App.FailController = Em.ObjectController.extend({
    content: null,
    myBinding: "App.router.myController" // <-- fails
});

Error:

Uncaught Error: assertion failed: Cannot delegate set('my', ) to the 'content' property of object proxy <.FailController:ember154>: its 'content' is undefined.

Intenta agregarlo a lacontent propiedad.

jsFiddle:manifestación