I am trying to get a plugin called 'Now Reading' working.
You can find it here: http://heliologue.com/projects/now-reading-for-wordpress-27/
I can search for books via the integrated Amazon search. When I find the book I want to add, the plugin takes me to the 'Not Found' page instead of adding the book to the DB.
Reading through the comments on the download page above, not everyone is having this trouble, so I'm wondering if anyone had any ideas.