Jetpack carousel has stopped working

The Jetpack carousel has stopped working on my blog, the galleries now just open up an attachment page instead and I can’t figure out why! Help please! You can see an example of this happening on this post:
http://weheartvintage.co/2013/04/30/underwater-fashion-show-1940s/

I’ve just upgraded Jetpack to the most recent version and it hasn’t fixed the problem. Please help! 🙂