[Zope-CMF] Portal catalog searchs fail

[Itamar Shtull-Trauring]

I'm doing the following as Anonymous and it fails with a traceback - it 
works fine as Manager(!!!). There are 0 items catalogged at the moment, but 
same error when some are. CMF 1.2, Zope 2.4. The issue is obviously with the 
changes CatalogTool does to queries, but I can't see how no one ever found 
this bug before.

Search:
return container.portal_catalog.searchResults(
            meta_type='CMF Event', review_state='published')


Traceback:
...
File 
/Services/www/zope2.4/lib/python/Products/PythonScripts/PythonScript.py, 
line 363, in _exec
     (Object: getEvents)
     (Info: ({'script': <PythonScript instance at 91c4838>, 'context': 
<CMFSite instance at 8b5b578>, 'container': <CMFSite instance at 
8b5b578>, 'traverse_subpath': []}, (), {}, None))
   File Script (Python), line 1, in getEvents
     (Object: guarded_getattr)
   File /Services/www/zope2.4/lib/python/Products/CMFCore/CatalogTool.py, 
line 193, in searchResults
     (Object: portal_catalog)
   File /Services/www/zope2.4/lib/python/Products/ZCatalog/ZCatalog.py, line 
653, in searchResults
     (Object: portal_catalog)
   File /Services/www/zope2.4/lib/python/Products/ZCatalog/Catalog.py, line 
650, in searchResults
   File /Services/www/zope2.4/lib/python/Products/ZCatalog/Catalog.py, line 
538, in _indexedSearch
   File 
/Services/www/zope2.4/lib/python/Products/PluginIndexes/common/UnIndex.py, 
line 402, in _apply_index
     (Object: expires)
AttributeError: find