You cannot respond to a meeting without an organizer

[-goose-]

Hello,

I have an issue with an end-user (user A) where she gets an error whe
editing a response to a meeting on behalf of another user (user B).

Here's the specs:

User A
Windows XP SP3
Office 2003 SP3

User B
Windows XP SP3
Office 2003 SP3
iPhone that syncs with mail and calendar

Servers
Exchange 2007
BES 4.1.6


User A has full delegated access to user B's calendar. When user
attempts to edit a response to a meeting request she gets the followin
error:

You cannot respond to a meeting without an organizer. You must add a
Organizer to the item.

See attached image for screenshot.

I can clearly see that there is an organizer before she attempts t
edit the response to the meeting.

The issue appears to be identical to the following posted on exper
exchange (http://tinyurl.com/bjmxxu) however no solution is poste
other than hinting that it is a blackberry problem.

I've spent a fair bit of time googling but have been unable to find
fix so any help would be much appreciated

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