title: The GAE SDK Console doesn't load the styles anymore
body: <p>A few months ago I was working on a test GAE app. I was able to start the launcher and open the browser both on the app port and on the SDK Console port, and they both were working well.</p>
  
  <p>Then I installed CherryPy, I created a CherryPy app, and I was able to browse to the app.</p>
  
  <p>Today I restarted the GAE launcher. When I browse to my app page everything works well, while browsing to the SDK Console it shows the correct content, but doesn't show the static files. </p>
  
  <p>The log mentions CherryPy. </p>
  
  <ul>
  <li>Is the CherryPy I installed conflicting with GAE? </li>
  <li>Does GAE use CherryPy (and my installation has nothing to do with it)?</li>
  <li>How do I fix it?</li>
  </ul>
  
  <p>For example when I browse to <code>http://localhost:8002/assets/common.css</code> (which is the css used by the SDK Console) I get the following log:</p>
  
  <pre><code>ERROR    2014-08-19 20:23:08,052 webapp2.py:1553] WSGI response header value u'text/css' is not of type str.
  Traceback (most recent call last):
    File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2-2.5.1\webapp2.py", line 1547, in __call__
      return response(environ, start_response)
    File "C:\Program Files (x86)\Google\google_appengine\lib\webob-1.2.3\webob\response.py", line 1021, in __call__
      start_response(self.status, headerlist)
    File "C:\Program Files (x86)\Google\google_appengine\lib\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 2155, in start_response
      raise TypeError("WSGI response header value %r is not of type str." % v)
  TypeError: WSGI response header value u'text/css' is not of type str.
  AssertionError('WSGI start_response called a second time with no exc_info.',)
  Traceback (most recent call last):
    File "C:\Program Files (x86)\Google\google_appengine\lib\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 1302, in communicate
      req.respond()
    File "C:\Program Files (x86)\Google\google_appengine\lib\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 831, in respond
      self.server.gateway(self).respond()
    File "C:\Program Files (x86)\Google\google_appengine\lib\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 2115, in respond
      response = self.req.server.wsgi_app(self.env, self.start_response)
    File "C:\Program Files (x86)\Google\google_appengine\google\appengine\tools\devappserver2\wsgi_server.py", line 266, in __call__
      return app(environ, start_response)
    File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2-2.5.1\webapp2.py", line 1549, in __call__
      return self._internal_error(e)(environ, start_response)
    File "C:\Program Files (x86)\Google\google_appengine\lib\webob-1.2.3\webob\response.py", line 1021, in __call__
      start_response(self.status, headerlist)
    File "C:\Program Files (x86)\Google\google_appengine\lib\cherrypy\cherrypy\wsgiserver\wsgiserver2.py", line 2137, in start_response
      raise AssertionError("WSGI start_response called a second "
  AssertionError: WSGI start_response called a second time with no exc_info.
  </code></pre>