I managed to solve this myself.
The mystery file would open with MS Excel, but not with OpenOffice calc. My computer was unable to identify what its extension was, even when I unclicked "Hide extensions". The file name was shown as, say, "car4playrocks", and the file type was given as "File."
So I renamed it "car4playrocks.xls", double clicked on it, and OpenOffice calc opened it perfectly. Problem solved.
Of course I'm still mystified.
Last edited by: wildernessman on Fri 26 Feb 10 at 12:44
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