Importing Competency XML from non-top level fails

File "/opt/cando/eggs/zope.publisher-3.5.0a1.dev_r78838-py2.4.egg/zope/publisher/publish.py", line 130, in publish
  obj = request.traverse(obj)
File "/opt/cando/eggs/zope.publisher-3.5.0a1.dev_r78838-py2.4.egg/zope/publisher/browser.py", line 513, in traverse
  ob = super(BrowserRequest, self).traverse(obj)
File "/opt/cando/eggs/zope.publisher-3.5.0a1.dev_r78838-py2.4.egg/zope/publisher/http.py", line 453, in traverse
  ob = super(HTTPRequest, self).traverse(obj)
File "/opt/cando/eggs/zope.publisher-3.5.0a1.dev_r78838-py2.4.egg/zope/publisher/base.py", line 263, in traverse
  obj = publication.traverseName(self, obj, entry_name)
File "/opt/cando/eggs/zope.app.publication-3.4.0a1_2-py2.4.egg/zope/app/publication/publicationtraverse.py", line 45, in traverseName
  ob2 = namespaceLookup(ns, nm, ob, request)
File "/opt/cando/eggs/zope.traversing-3.5.0a1.dev_r78730-py2.4.egg/zope/traversing/namespace.py", line 113, in namespaceLookup
  return traverser.traverse(name, ())
File "/opt/cando/eggs/zope.traversing-3.5.0a1.dev_r78730-py2.4.egg/zope/traversing/namespace.py", line 344, in traverse
  name=name)
File "/opt/cando/eggs/zope.component-3.4.0a1-py2.4.egg/zope/component/_api.py", line 114, in queryMultiAdapter
  return sitemanager.queryMultiAdapter(objects, interface, name, default)
File "/opt/cando/eggs/zope.component-3.4.0a1-py2.4.egg/zope/component/registry.py", line 206, in queryMultiAdapter
  return self.adapters.queryMultiAdapter(
File "/usr/lib/python2.4/site-packages/zope/interface/adapter.py", line 482, in queryMultiAdapter
  result = factory(*objects)
File "/opt/cando/src/cando/xmlcompetencyio/browser.py", line 38, in __init__
  self.update()
File "/opt/cando/src/cando/xmlcompetencyio/browser.py", line 68, in update
  ok = self.importer.importFromXML(xmlfile)
File "/opt/cando/src/cando/xmlcompetencyio/importer.py", line 44, in importFromXML
  self.trafoVaComp(stuff, None)
File "/opt/cando/src/cando/xmlcompetencyio/importer.py", line 86, in trafoVaComp
  currentCompetencies = Competencies(currentList.description)