I've been getting this same message since yesterday trying to check out under the photo dept. I couldn't try to do the "guest" check out because my photos are under my account. I did clear my brower's history, caches and cookies for IE and Chrome both and I tried doing the back button and clicking the continue to check out over and over and over agian. The only way I finally got past this was do download Mozilla Firefox. It finally took it when I used this browser. Hope this helps, I know it's frustrating. It was for me!
I've been getting this same message since yesterday trying to check out under the photo dept. I couldn't try to do the "guest" check out because my photos are under my account. I did clear my brower's history, caches and cookies for IE and Chrome both and I tried doing the back button and clicking the continue to check out over and over and over agian. The only way I finally got past this was do download Mozilla Firefox. It finally took it when I used this browser. Hope this helps, I know it's frustrating. It was for me!