Someone

  Module Products.PageTemplates.Expressions, line 211, in evaluateBoolean
  Module zope.tales.tales, line 696, in evaluate
   - URL: file:/var/lib/zope/plone-30-trunk/Products/Archetypes/skins/archetypes/edit_macros.pt
   - Line 123, Column 5
   - Expression: <PythonExpr fieldsets and not allow_tabbing>
   - Names:
      {'container': <PloneSite at /test>,
       'context': <CacheTool at /test/portal_cache_settings>,
       'default': <object object at 0xb7cc9528>,
       'here': <CacheTool at /test/portal_cache_settings>,
       'loop': {},
       'nothing': None,
       'options': {'args': (),
                   'state': <Products.CMFFormController.ControllerState.ControllerState object at 0xd0937cc>},
       'repeat': <Products.PageTemplates.Expressions.SafeMapping object at 0xe01e58c>,
       'request': <HTTPRequest, URL=http://worker.boxed.no:5080/test/portal_cache_settings/cache_tool_config>,
       'root': <Application at >,
       'template': <FSControllerPageTemplate at /test/cache_tool_config used for /test/portal_cache_settings>,
       'traverse_subpath': [],
       'user': <PropertiedUser 'admin'>}
  Module Products.PageTemplates.ZRPythonExpr, line 49, in __call__
   - __traceback_info__: fieldsets and not allow_tabbing
  Module PythonExpr, line 1, in <expression>
NameError: name 'allow_tabbing' is not defined