I know it's an old Zope version, but it doesn't look like the code's changed in this area since then... Should it be possible for the following to happen? File "C:\Zope\2.7.6\lib\python\Products\ZCatalog\ZCatalog.py", line 558, in uncatalog_object self._catalog.uncatalogObject(uid) File "C:\Zope\2.7.6\lib\python\Products\ZCatalog\Catalog.py", line 411, in uncatalogObject x.unindex_object(rid) File "C:\Zope\2.7.6\lib\python\Products\ZCTextIndex\ZCTextIndex.py", line 181, in unindex_object self.index.unindex_doc(docid) File "C:\Zope\2.7.6\lib\python\Products\ZCTextIndex\OkapiIndex.py", line 68, in unindex_doc BaseIndex.unindex_doc(self, docid) File "C:\Zope\2.7.6\lib\python\Products\ZCTextIndex\BaseIndex.py", line 176, in unindex_doc self._del_wordinfo(wid, docid) File "C:\Zope\2.7.6\lib\python\Products\ZCTextIndex\BaseIndex.py", line 304, in _del_wordinfo del doc2score[docid] KeyError: 1833646546 cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk