Customising featured slider not working

The Featured Slider seems to have stopped working. Whenever I activate the Demo Feature Slider it shows up as normal, but when I switch to the Featured Page Slider option it disappears completely. I have set a feature image for all pages that I've tried to show in the slider. There are no error messages and no plugins of any kind running - the slides are missing from the page completely (though the menu items are visible in the html source). I am running version 2.2 of your Catch Base theme on Wordpress version 4.2.3 on a local development platform, no URL available.