In Office 2007, I can open files (either .xls or .xlsx) but the
worksheets and data do not appear. If I maximize or restore the
screen, or if I hit the Office button, the data will show up. It
appears at first as if only the shell of the program is open until
changing the screen size or clicking the Office button, which reveals
the workbook.

If Excel is opened first, a blank workbook does appear normally. If
opening a file from within Excel, everything is fine. It is just when
double-clicking on a file from a saved location or opening directly
from an email message that this happens. This happens with all files,
even new ones after I create them and close Excel.

Any ideas...

P