First of all, I’d like to thank you for this wonderful book!
However, on the “Create Multistep Wizards” recipe (16), I ran into a problem. For some reason, the “Previous” button is not functional within the web browser (though it is functional from the command line). I copied your edit.html.erb from the web server. Also, index.html.erb is not included in the book (although it is available on the website by simply typing the path to it).
EDIT: OOPS I included “Recipe 12” in the title when it is in fact “16”