New and previous Nivo Sliders don’t display

I had a Nivo slider that used to work last year. I added a new one, put the shortcode on the page, but no slider appears on that page. I tried both the short verion and the slug version. I tried both Chrome and Safari browsers.

Now I see that my previously working slider doesn’t display either! I’m using the free version.

The page I need help with: [log in to see the link]