[Plugin: Slideshow Gallery] Slideshow not working

I’ve installed the Slideshow Gallery plugin, setup the slides and added the shortcode to my page using the toolbar button but nothing happens. I’ve also tried adding the php code to my theme but get the same result.

Can anyone let me know what’s stopping the plugin from working? The site is http://www.narinportnoogolfclub.ie/ and the slideshow should be appearing on the homepage.