Trouble registering with Flickr

I made a new Flickr account. I created a new story, and clicked the Photos from Flickr buttons. I was asked to verify my account ("Your flickr account is not verified yet. Please verify it"). I typed my new Flickr id in the box, and clicked Verify. A Flickr login window came up. I typed in my password and clicked Sign In. I then got the message Page not found! The URL at the top of the Safari/Mac window was http://dandelife.com/flickr/callback?... I had the same problem in FireFox, where the callback was also http://dandelife.com/flickr/callback?...