[silva-dev] ERROR Zope.KeywordIndex Attempt to unindex nonexistent document id -1952486095

[Nico Grubert]

Dear Silva developers,

when working in the SMI, Zope writes a lot of "ERROR Zope.KeywordIndex 
Attempt to unindex nonexistent document id -...." messages into the 
'event.log' file.

I compared the entries in the 'event.log' file with the transactions 
listed at the "Undo" tab in the ZMI.

Entry in event.log:
2006-06-09T10:15:14 ERROR Zope.KeywordIndex Attempt to unindex 
nonexistent document id -1952486095

Undo Entry: 
/silva/service_views/Silva/edit/VersionedContent/tab_edit_publish by 
admin  2006-06-09 10:15:14


Does anybody have an explaination what this error message exactly means 
and how to solve this?

Regards,
    Nico