Cannot create new task in Outlook

F

Fila Ales

Hello,
when I want to create new task, fill in all necessary data and click Save,
box appears with message Invalid parameter and cannot continue. It happens
only in one user's mailbox. Exchange 2000 SP3 on W2K Server SP4, client W2K,
Outlook 2002. If I delete mailbox, create new one, import data everything is
OK. After setting Outlook to offline synchronization error is back. How can I
check if some item in mailbox is causing this behavior ? Many thanks for help.
 
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