• weberror.evalexception : 431, in respond

  app_iter = self.application(environ, detect_start_response)
  

• beaker.middleware : 152, in __call__

  return self.wrap_app(environ, session_start_response)
  

• routes.middleware : 131, in __call__

  response = self.app(environ, start_response)
  

• pylons.wsgiapp : 107, in __call__

  response = self.dispatch(controller, environ, start_response)
  

• pylons.wsgiapp : 312, in dispatch

  return controller(environ, start_response)
  

• scorpio.lib.base : 18, in __call__

  return WSGIController.__call__(self, environ, start_response)
  

• pylons.controllers.core : 211, in __call__

  response = self._dispatch_call()
  

• pylons.controllers.core : 162, in _dispatch_call

  response = self._inspect_call(func)
  

• pylons.controllers.core : 105, in _inspect_call

  result = self._perform_call(func, args)
  

• pylons.controllers.core : 57, in _perform_call

  return func(**args)
  

• scorpio.controllers.browse : 28, in itc

  return render('/derived/browse/itc.html')
  

• pylons.templating : 243, in render_mako

  cache_type=cache_type, cache_expire=cache_expire)
  

• pylons.templating : 218, in cached_template

  return render_func()
  

• pylons.templating : 240, in render_template

  return literal(template.render_unicode(**globs))
  

• mako.template : 198, in render_unicode

  as_unicode=True)
  

• mako.runtime : 403, in _render

  _render_context(template, callable_, context, *args, **_kwargs_for_callable(callable_, data))
  

• mako.runtime : 434, in _render_context

  _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
  

• mako.runtime : 452, in _exec_template

  _render_error(template, context, e)
  

• mako.runtime : 462, in _render_error

  result = template.error_handler(context, error)
  

• mako.runtime : 450, in _exec_template

  callable_(context, *args, **kwargs)
  

• _base_index_html : 47, in render_body

  __M_writer(escape(next.body()))
  

• mako.runtime : 278, in <lambda>

  return lambda *args, **kwargs:callable_(self.context, *args, **kwargs)
  

• _derived_browse_itc_html : 68, in render_body

  __M_writer(escape( c.paginator.pager(format='~2~')))
  

• webhelpers.paginate : 688, in pager

  result = re.sub(r'~(\d+)~', _range, format)
  

• re : 150, in sub

  return _compile(pattern, 0).sub(repl, string, count)
  

• webhelpers.paginate : 661, in _range

  nav_items.append( _pagerlink(thispage, text) )
  

• webhelpers.paginate : 597, in _pagerlink

  link_url = url_for(**link_params)
  

• routes.util : 189, in url_for

  encoding = config.mapper.encoding
  

• routes : 14, in __getattr__

  return getattr(self.__shared_state, name)
  

AttributeError: 'thread._local' object has no attribute 'mapper'