title: Rails getting ActionController::RoutingError (No route matches [GET] "/assets/images/ui-bg_flat_75_ffffff_40x100.png")
body: <p>I'm getting the following error in a Rails app (doing a GET request for an image that doesn't exist:):</p>
  
  <pre><code>ActionController::RoutingError (No route matches [GET] "/assets/images/ui-bg_flat_75_ffffff_40x100.png"):
  actionpack (3.2.12) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
  actionpack (3.2.12) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  ...
  </code></pre>
  
  <p>It looks like a known error in jquery-ui.css</p>
  
  <p>These sites talk about it:</p>
  
  <p><a href="http://forum.jquery.com/topic/jquery-ui-css-images">jquery-ui.css images</a></p>
  
  <p><a href="https://github.com/fwenzel/reporter/commit/d6b3cd8">Fixed jQuery UI CSS and image location to work with minified assets</a></p>
  
  <p>And</p>
  
  <p><a href="https://bugzilla.mozilla.org/show_bug.cgi?id=607759">Bug report</a></p>
  
  <p>I have jquery-ui.css in my stylesheets folder.  It is this version: /*! jQuery UI - v1.9.2 - 2012-11-23</p>
  
  <p>Line 246 has:</p>
  
  <pre><code>url(images/ui-bg_flat_75_ffffff_40x100.png)
  </code></pre>
  
  <p>But, I don't know how to fix it.</p>
  
  <p>Any help would be appreciated!</p>