Gallery Theme slider photos disappeared

Earlier this evening the Gallery theme was working fine. Tonight I went to work on it and the photos set up for the home page logo and slides were gone. The slide names were there in the dashboard, but the links to the pictures as well as the link to the logo was gone. I have added the logo, but the slider images won't appear even though I've inputted the links to the images. The slider is gray although it has a 123 in the corner and a prev and next arrow. If you click on the gray, you are taken to the photo that should be appearing in the slider. So the image URLs are right, they just aren't showing up in the slider.

I haven't made any changes to the site since I walked away from it working properly earlier. Any idea why that would happen? is the site if you need to see what I'm talking about.