I keep generating the following error message while opening an *.xls spreadsheet.... (Excel found unreadable content in *******.xls. Do you want to recover the contents of this workbook? If you trust the source of this workbook, click yes), then the next message comes up.... (Excel was able to open the file by repairing or removing the unreadable content).
I tried reduping the problem to a different laptop, which is running Windows XP and running MS Office 2007. However, I tried on a third laptop running Windows XP and running MS Office 2002.... no error messages were generated.