Example gadget in Embedded Experience Tutorial will not render

The Youtube Player gadget described in this tutorial: http://docs.opensocial.org/display/OSREF/Embedded+Experiences+Tutorial, does not render.

The unique identifier for the YouTube video is stored in the JSON context for the gadget. The gadget attempts to programmatically insert this unique identifier into the URL.

Instead of returning the unique identifier, the container is returning the original context object wrapped inside of another object. The resulting URL looks like this:

http://www.youtube.com/v/[object%20Object]?fs=1&hl=en_US