Portfolio Pages show 404 error Page Not Found

Hello, Pls look at my website url below. I have a Portfolio Carousel below the Revolution slider. I have created the portfolio items, slug, etc… all correctly. When I click on the portfolio item, it should take me to its portfolio page, tut its not. Instead its showing a 404 – Page Not Found error.

Of the 9 Portfolio Items that I have in the carousel, ONLY 1 item link works, but its going to the wrong page.

website url:
http://cdimedia.com

Thanks.