instiki/vendor/rails/actionpack/lib/action_controller/templates/rescues/routing_error.rhtml

<h1>Routing Error</h1>
<p><pre><%=h @exception.message %></pre></p>
<% unless @exception.failures.empty? %><p>
  <h2>Failure reasons:</h2>
  <ol>
  <% @exception.failures.each do |route, reason| %>
    <li><code><%=h route.inspect.gsub('\\', '') %></code> failed because <%=h reason.downcase %></li>
  <% end %>
  </ol>
</p><% end %>