My Excel 2007 on Vista has started failing to open documents with the
error 'system cannot find the file specified' when I double click on
an Excel file or Excel attachment. In Outlook, if I double click on an
attachment, 2 copies of Excel open, and 2 copies of the file are
created in my Outlook temporary files folder named file1.xls and
file1(2).xls. File associations are properly set. I cleaned out the
temporary files folder. Help!

Steve Blevins