ruby on rails ecommerce tests are failing, but why?

i am working through the Beginning Ruby on Rails Ecommerce book and on page 101 where it is talking about integration tests, i run test/integration/book_test.rb and it fails giving me the following error message:

  1) Failure: test_book_administration(BookTest)     [test/integration/book_test.rb:45:in `add_book'      test/integration/book_test.rb:11:in `test_book_administration'

/usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.5/lib/action_controller/integration.rb:431:in `run']: expected tag, but no tag found matching {:content=>"Ruby for Dummies", :tag=>"td"} in: "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n\t\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\\&quot;&gt;\\n&lt;html xmlsn=\"http://www.w3.org/1999/xhtml\\&quot;&gt;\\n\\t&lt;head&gt;\\n\\t\\t&lt;title&gt;Emporium&lt;/title&gt;\\n\\t\\t&lt;link href=\"/stylesheets/style.css?1164206463\" media=\"screen\" rel=\"Stylesheet\" type=\"text/css\" />\n\t</head>\n\t<body>\n\t\t<div id=\"header\">\n\t\t\t<h1 id=\"logo\">Emporium&trade;</h1>\n\t\t\t<h2 id=\"slogan\">Books on Rails</h2>\n\t\t</div>\n\n\t\t<div id=\"menu\">\n\t\t\t<ul>\n\t\t\t\t<li><a href=\"/admin/author\">Authors</a>&nbsp;|&nbsp;</li>\n\t\t\t\t<li><a href=\"/admin/publisher\">Publishers</a>&nbsp;|&nbsp;</li>\n\t\t\t\t<li><a href=\"/admin/book\">Books</a>&nbsp;|&nbsp;</li>\n\t\t\t\t<li><a href=\"/\">Catalog</a>&nbsp;|&nbsp;</li>\n\t\t\t\t<li><a href=\"/about\">About</a>&nbsp;</li>\n\t\t\t</ul>\n\t\t</div>\n\n\t\t<div id=\"content\">\n\t\t\t\n\t\t\t\n\t\t\t\t<div id=\"notice\">\n\t\t\t\tBook was successfully created.\n\t\t\t\t</div>\n\t\t\t\n\t\t\t<h1>Listing books</h1>\n\n<table>\n <tr>\n \n <th>Title</th>\n \n <th>Published at</th>\n \n <th>Isbn</th>\n \n <th>Blurb</th>\n \n <th>Price</th>\n \n <th>Created at</th>\n \n <th>Updated at</th>\n \n </tr>\n \n\n <tr>\n \n <td>Ruby for Dummies</td>\n \n <td>Mon Dec 04 09:27:30 CST 2006</td>\n \n <td>123-123-123-X</td>\n \n <td>The best book released since &quot;Eating for Dummies&quot;</td>\n \n <td>40.4</td>\n \n <td>Mon Dec 04 09:27:30 CST 2006</td>\n \n <td>Mon Dec 04 09:27:30 CST 2006</td>\n \n <td><a href=\"/admin/book/show/9\">Show</a></td>\n <td><a href=\"/admin/book/edit/9\">Edit</a></td>\n <td><a href=\"/admin/book/destroy/9\" onclick=\"if (confirm('Are you sure?')) { var f = document.createElement('form'); this.parentNode.appendChild(f); f.method = 'POST'; f.action = this.href; f.submit(); };return false;\">Destroy</a></td>\n </tr>\n\n</table>\n\n\n \n\n<br />\n\n<a href=\"/admin/book/new\">New book</a>\n\n\t\t</div>\n\n\t\t<div id=\"footer\">&copy; 1995-2006 Emporium</div>\n\t</body>\n</html>\n". <nil> is not true.

looking through the code, i clearly see that "Ruby for Dummies" is in fact in there and I also see that it is wrapped inside of "td" html tags... so why is this test failing? i thought there might have been a typo in my code somewhere, so i downloaded the sample code from the site and i still got the same error message.

i'm new to TDD so i'm not really sure where to start troubleshooting this