Problem- add-in Access Outlook Add-in for Data Collection & Publis

I have a problem with Outlook 2007 and the add-in Access Outlook Add-in for
Data Collection and Publishing.

This add-in worked when I first installed Outlook 2007 when installing
Office 2007 Enterprise. The add-in created a sub-folder in my Inbox named
Data Collection Replies and worked well until about 6 weeks ago.

Now I can’t get the add-in to work at all even though it appears in the list
of COM.adds in Outlook 2007.

More perplexing is the error message I now receive EVERY time I click on any
email message to read it.

The message is titled ‘Custom UI Runtime Error in Microsoft Access Outlook
Add-in for Data Collection and Publishing’ and the text of the error reads
‘An error occurred while calling the callback: “Ribbon_GetDCVisible� ‘

WHY is this happening (especially as the ribbon does not even exist in the
Outlook main window)?

HOW do I get rid of this annoying error message?

HOW do I restore the add-in’s functionality?