Share popup only pops up momentarily (after upgrade to new schema)

I'd been putting off the recent update(s) that requires patching service links and forward, but decided to take a crack at it today. One issue I'm now having is that the Share popup only pops up for an instant, then goes away. See http://centralpalibraries.org for an example. Is this potentially a javascript error? This site also uses lightbox2, and I have the latest jquery update installed.