"Nothing Found" when trying to view individual portfolio image pages

I have been struggling with trying to get the individual page to show up when I click on an image in a portfolio grid, or even from the portfolio items section of my dashboard. Can someone please tell me what I’m doing wrong? I can’t find anything in the tutorials about this and if I can’t get it to work, this theme is useless to me. I do not want to use the Ajax portfolio function, I want the individual images to actually open on a new page which was why I though I was entering all the page layout information up in the “Portfolio Items” section.