twitter-timeline shortcode not working in WP post

I tried to use the [twitter-timeline] short code in a wordpress post on my self-hosted install, but it does not display the timeline. Only hyperlinked “Tweets by @ocabj” text.

Post is here: http://www.ocabj.net/inside-basel-geneva-2013-by-watchtime-magazine/

The actual twitter widget was generated on the https://twitter.com/settings/widgets page under my account/username (@ocabj).

The short code as entered on the page is:

[twitter-timeline id=380365916065656833 username=ocabj]

Any ideas?

WordPress 3.6.1 with JetPack 2.4.2