However I can only suggest under MS Office tools you run the Ms Office Diagnostic tool and see if there is a problem with the word installation.
My understanding is that the code reader is used for old versions of Word and for non doc files. Is your default for docx set correctly to Word?
docx is the file extension for Word 2007. Previous versions of Word used doc and cannot read docx unless a converter is downloaded. In W7 check that doc and docx are correctly associated with Word but I think that you will find that they are. Sorry rather stuck with your snag as I haven't come across it before.
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