I am using the featured content slider on my home page to show photos. The way I implemented it was to, for each image, create a page, include a title and text and then a link to a photo (using Add Media). My page includes just a sentence or 2 of text describing the photo and then a link to a photo. I indicate that I want to feature the page in the featured content slider. Each page shows up, the text shows up and the box for the photo shows up, but no photo. If I preview the page, it shows the photo. But it doesn't show in the content slider itself on the home page.
The instructions say that I need to "set an image as "Featured Image" (WordPress Post-Thumbnail Support). I don't know what this means or how to do it. Perhaps this is all I'm missing??