Out of office assistant not working

With Windows XP (SP2)  and exchange 2003 I have users who will come back from being out of the office and even when they say to turn this off other users still get a message saying they are out of the office.  When accessing the out of office assistant users get the following error message.  The Command is not available.  See the program documentation about how to use this extension.  When I logon and create a new mail profile for this user on a different system everything works fine.  It again prompts me to turn off this feature.  I say yes.  Now the out of office kick back messages stop.  I can now access the ooo assistant on this workstaion but the users own workstation still gives an error.  
All articles point to the renaming of the resiliency subkey in the registry.  This key does not exist on any systems in my company, which are all running Windows XP.  Any help would be appreciated.  This is the third system this has happened to in the past 3 weeks.  
Darrell KirbyAsked:
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Darrell KirbyAuthor Commented:
If you can have this moved to the Exchange topic area that would be great.  I do not know how to do this.  Thanks.
The message "The Command is not available.  See the program documentation about how to use this extension. " is a result of Outlook Safe Mode deciding that a feature should not be enabled because it caused a problem.

To enable items that were disabled by Office Safe Mode
1.                  On the Help menu, click About Microsoft Outlook.
2.                  Click Disabled Items.
3.                  Select the items you want to enable.
4.                  Click Enable.

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Darrell KirbyAuthor Commented:
The solution above has solved my proboem.  Thank you.
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