The opendata.blender.org link in the text above goes to https://cgcookie.com/lessons/opendata.blender.org, not https://opendata.blender.org as intended.
How do generally want us to report errors like these? It doesn’t feel right to clutter the questions section like I did.
I think this maybe what it is supposed to link to Blender - Open Data
Funny thing is the code looks ok to me, but I have passed on to the proper authorities.
Thanks for letting us know.