Error identifying calendar profile/document

I get numerous errors of this type:14/07/2005 07:40:43 SchedMgr: Error identifying calendar profile/document (UNID OF12AA6FD0:74D6B157-ONC22569D1:0041C8B0) in database mail\02120.nsf

Any ideas for fixing this?

Subject: Error identifying calendar profile/document

I’m getting ths too on 6.5.2. Anyone have a workaround/fix?

take care,

Mike