Content not loading

[TechnoMaster]

After the splash screen is displayed, I see only a blank screen with no content loaded. I have gone over the code and see no errors. Any help or completed code I can use to compare with?

[ngducnghia]

I believe this tutorial is out of date. For complete code you can refer to this url https://blog.roku.com/developer/2016/03/03/scenegraph-tutorial#!