Brian suggested putting this in the Word forum. He thought they might actually be Word documents even though they seemed to be excel files.
Excel found unreadable content in filename.XLS. Do you want to recover the contents
Asked by: mzimerman
We removed a couple of Excel files from a computer to a flash drive. When we restored the files to the computer, we got the Excel found unreadable contents message and the user is understandably upset. We don't know for sure that the files were not corrupted before we made the transfer, but if possible I'd like to give her the files back uncorrupted. I would like to attach these files to see if someone could have some better luck at it than I. The user is using Excel 2010, but I believe the files are created in Excel 2003. I have no idea what is on these files.