Cannot access Shared Photo Streams
I have iPhoto 11 (9.4), and OS 10.7.5. I have signed into iCould on my MacBook Pro and I have enabled Photo Stream in iPhoto. However, whenever someone sends me an email invitation to share a Photo Stream, I get the page that explains how to get started with Photo Stream. https://www.icloud.com/photos_get_started/. Any ideas what the problem might be?
MacBook Pro (13-inch Mid 2010), Mac OS X (10.7.5)