Thumbnail of pictures not showing up in album.

So I just today cleaned up my Ipad2 to update IOS. Now that IOS7 is on, everything is crap. I hate the new update. Everything is so ugly to begin with and it's not at all as easier as it was. Second, when I go in my pictures, looking at the albums, there is only grey squares where the pictures should be. And when I click on it and it opens wider, the. I can see what picture it is.

This is a horrible update. Please change it back to what it was.