Merge Sheets not working in Vista
 

I just purchased a new PC with Vista. I am running Office 2007 (Excel). The
feature to merge mutliple sheets has stopped working. I can see that there
are changes in the 'child sheets' but when I merge it says there are no
changes to merge.

The feature worked yesterday when I was running Office 2007 on XP Pro, but
has stopped working under Vista. Can anyone advise if there is some new
permission or feature that I must enable to allow this feature to work?
--
Thx,
SA Roberts