From: Windog on
Using Windows 7 / Excel 2007. I can open old xls files using Excel 2007 but
can not open any xlsx files. When I select an xlsx file to open, a new blank
worksheet opens instead of the selected file. The "ignore other
applications" box is unchecked as recommended in other posts and I have
re-installed Office. Neither solved the problem. Please help. Kind regards,
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Windog