You need to remove it on the blackberry.
http://www.bbhub.com/2006/07/14/how-...ndar-database/

--
Diane Poremsky [MVP - Outlook]
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"swallows geoff" swallows wrote in message
...
I have bought a new Blackberry but am unable to backup the calendar - I
get a
"corrupt data" message for an old item, and I cant find a way to get rid
of
the item. Any ideas please?
Geoff