#65 — AttributeError: header after clicking the 'Browse...' button in an un-saved bibliography folder

Traceback (innermost last):
  Module ZPublisher.Publish, line 119, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 42, in call_object
  Module Products.CMFPlone.FactoryTool, line 376, in __call__
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 42, in call_object
  Module Shared.DC.Scripts.Bindings, line 313, in __call__
  Module Shared.DC.Scripts.Bindings, line 350, in _bindAndExec
  Module Products.CMFCore.FSPageTemplate, line 216, in _exec
  Module Products.CMFCore.FSPageTemplate, line 155, in pt_render
  Module Products.PageTemplates.PageTemplate, line 89, in pt_render
  Module zope.pagetemplate.pagetemplate, line 117, in pt_render
   - Warning: Macro expansion failed
   - Warning: exceptions.AttributeError: header
  Module zope.tal.talinterpreter, line 271, in __call__
  Module zope.tal.talinterpreter, line 346, in interpret
  Module zope.tal.talinterpreter, line 870, in do_useMacro
  Module zope.tales.tales, line 696, in evaluate
   - URL: file:/Users/gjp22/Plone-3.0-buildout/zeocluster/parts/products-svn/ATBiblioList/skins/bibliography_list/popup_bibrefbrowser.pt
   - Line 21, Column 2
   - Expression: <PathExpr standard:u'here/header/macros/html_header'>
   - Names:
      {'container': <PloneSite at /Plone>,
       'context': <BibliographyList at /Plone/portal_factory/BibliographyList/bibliographylist.2008-02-06.3517515361 used for /Plone>,
       'default': <object object at 0x392528>,
       'here': <BibliographyList at /Plone/portal_factory/BibliographyList/bibliographylist.2008-02-06.3517515361 used for /Plone>,
       'loop': {},
       'nothing': None,
       'options': {'args': ()},
       'repeat': <Products.PageTemplates.Expressions.SafeMapping object at 0x94c8a30>,
       'request': <HTTPRequest, URL=http://localhost:5555/[…]/popup_bibrefbrowser>,
       'root': <Application at >,
       'template': <FSPageTemplate at /Plone/popup_bibrefbrowser used for /Plone/portal_factory/BibliographyList/bibliographylist.2008-02-06.3517515361>,
       'traverse_subpath': [],
       'user': <PropertiedUser 'admin'>}
  Module zope.tales.expressions, line 217, in __call__
  Module Products.PageTemplates.Expressions, line 153, in _eval
  Module zope.tales.expressions, line 124, in _eval
  Module Products.PageTemplates.Expressions, line 80, in boboAwareZopeTraverse
  Module OFS.Traversable, line 301, in restrictedTraverse
  Module OFS.Traversable, line 269, in unrestrictedTraverse
   - __traceback_info__: ([], 'header')
AttributeError: header