Aegaeus – Portfolio Issue

Hi,

I’ve just started using this theme and am trying to set up a portfolio page in which one image at a time is shown on the page. I’ve set up a Portfolio Category and placed three Portfolio items in that Category. Then I created a Page, gave it the template type of “Portfolio” and specified the portfolio category slug in the “Specify Portfolio Category” field. When I go to that page, I don’t see the image thumbnails. (attached image) What am I doing wrong?

Thank you!