Hi
For the error message, here is a KB for your reference, it states when you try to open a Microsoft Office Word 2007 document that has an attached template in Microsoft Office Word 2003 or in earlier versions of Word, the File Conversion dialog box appears.
You are prompted to select the encoding that makes your document readable.
http://support.microsoft.com/kb/929993
You might also refer to the following link to how to troubleshoot damaged documents in Word 2007 and in Word 2010.
http://support.microsoft.com/kb/918429
If you want to recover the word file, see the following link on 10+ ways to recover a corrupted Word document:
http://www.techrepublic.com/blog/10-things/10-plus-ways-to-recover-a-corrupted-word-document/
(Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of
this information.)
Regards
Tylor Wang
TechNet Community Support
