Error - etree.XPathSyntaxError: error in xpath expression
URL: http://localhost:10000/projects/clop/tasks/
File '/home/novalis/fsm.env/deliverance/lib/python2.4/site-packages/Paste-1.6-py2.4.egg/paste/exceptions/errormiddleware.py', line 143 in __call__
  app_iter = self.application(environ, start_response)
File '/home/novalis/fsm.env/deliverance/lib/python2.4/site-packages/Paste-1.6-py2.4.egg/paste/registry.py', line 334 in __call__
  app_iter = self.application(environ, start_response)
File '/home/novalis/fsm.env/deliverance/src/deliverancevhoster/dvhoster/scrubber.py', line 30 in __call__
  return self.app(environ, start_response)
File '/home/novalis/fsm.env/deliverance/lib/python2.4/site-packages/Beaker-0.9.2-py2.4.egg/beaker/middleware.py', line 146 in __call__
  response = self.wrap_app(environ, session_start_response)
File '/home/novalis/fsm.env/deliverance/src/eyvind/eyvind/lib/authmiddleware.py', line 140 in __call__
  status, headers, body = intercept_output(environ, self.app, self.needs_redirection, start_response)
File '/home/novalis/fsm.env/deliverance/lib/python2.4/site-packages/Paste-1.6-py2.4.egg/paste/wsgilib.py', line 539 in intercept_output
  app_iter = application(environ, replacement_start_response)
File '/home/novalis/fsm.env/deliverance/lib/python2.4/site-packages/Paste-1.6-py2.4.egg/paste/recursive.py', line 80 in __call__
  return self.application(environ, start_response)
File '/home/novalis/fsm.env/deliverance/src/deliverancevhoster/dvhoster/custom_error.py', line 90 in __call__
  return self.application(environ, start_response)
File '/home/novalis/fsm.env/deliverance/src/deliverancevhoster/dvhoster/dispatcher.py', line 226 in __call__
  return app(environ, start_response)
File '/home/novalis/fsm.env/deliverance/src/deliverance/deliverance/wsgimiddleware.py', line 234 in __call__
  body = self.filter_body(environ, body)
File '/home/novalis/fsm.env/deliverance/src/deliverance/deliverance/wsgimiddleware.py', line 270 in filter_body
  content = self.get_renderer(environ).render(parseHTML(body))
File '/home/novalis/fsm.env/deliverance/src/deliverance/deliverance/interpreter.py', line 68 in render
  self.apply_rules(self.rules, result, input)
File '/home/novalis/fsm.env/deliverance/src/deliverance/deliverance/interpreter.py', line 94 in apply_rules
  self.apply_rule(rule, theme, content)
File '/home/novalis/fsm.env/deliverance/src/deliverance/deliverance/interpreter.py', line 107 in apply_rule
  self.apply_prepend(rule, theme, content)
File '/home/novalis/fsm.env/deliverance/src/deliverance/deliverance/interpreter.py', line 222 in apply_prepend
  content_els = copy.deepcopy(content.xpath(xpath))
File 'etree.pyx', line 1091 in etree._Element.xpath
File 'xpath.pxi', line 75 in etree._XPathEvaluatorBase.evaluate
File 'xpath.pxi', line 174 in etree.XPathElementEvaluator.__call__
File 'xpath.pxi', line 105 in etree._XPathEvaluatorBase._handle_result
File 'xpath.pxi', line 93 in etree._XPathEvaluatorBase._raise_parse_error
XPathSyntaxError: error in xpath expression