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Downloaded data files are corrupt

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I downloaded the new Chandoo ebook 10 10 10 10. I followed a link to learn more about Structural Referencing and downloaded the suggested data file to follow along.
The file downloaded but would not open. Attached are two screen shots of the error messages I received. I tried to duplicate the error by downloading Excel files from other web sites and they opened correctly. Hopefully you will be able to help because this looks like a great site to learn more about Excel.

I have Windows 10 Home and Microsoft Office 365.

Thank you.
Dale Anderson


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