Error reading Excel XML file: "External table is not in the expected format."

I need to read the contents of sheet "SH_1", but I keep getting the "External table is not in the expected format" error.

My (sample) Excel file:


MIME-Version: 1.0
X-Document-Type: Workbook
Content-Type: multipart/related; boundary="-=BOUNDARY_EXCEL"
---=BOUNDARY_EXCEL
Content-Type: text/html; charset="big5"
<html xmlns:o="urn:schemas-microsoft-com:office:office"
xmlns:x="urn:schemas-microsoft-com:office:excel">
<head>
<xml>
<o:DocumentProperties>
<o:Author>Jo</o:Author>
<o:LastAuthor>Jo</o:LastAuthor>
<o:Created>2009-11-25T09:14:43Z</o:Created>
<o:LastSaved>2009-11-25T09:14:43Z</o:LastSaved>
<o:Company>MyCompany</o:Company>
<o:Version>11.5606</o:Version>
</o:DocumentPropert ...