Sorry! It seems you've run into an error:
Message:
The 'UId' property on 'CompileMeetingAttachmentHistory' could not be set to a 'System.Guid' value. You must set this property to a non-null value of type 'System.String'.
The 'UId' property on 'CompileMeetingAttachmentHistory' could not be set to a 'System.Guid' value. You must set this property to a non-null value of type 'System.String'.