appointments popup non-existant

I’ve installed and configured Appointments+, and placed the short codes for the services and the calendar on a page called appointments at:

The only plugins I have running are WPMU’s “Fundraising” and this one.

When you click an appointment time, nothing happens. I know a popup is supposed to offer you a form.

I know I am supposed to check javascript issues, but I’m not seeing any errors.

We’re running the latest version of WP and this plugin as well.

Thanks for your help.