When I add a Portfolio page, it shows under the category (http://euphoriahairgallery.com/portfolio/services/).
However, if I click an individual item under that category, it disappears: I get a blank screen with just the menu (http://euphoriahairgallery.com/portfolio-item/so-cap-extensions/).
I had this happen with the "Staff" category I created under Portfolio and could not resolve it. One staff page appeared and one would not. I moved Staff to Posts instead of Portfolio.