The error is caused by a corrupted table of contents. Numerous tables
within the document can also trigger a problem in word's XML file. I
have a non-techie solution (2 fixes actually) that can help any lay
person work around this problem and recover their document without
having learn how to edit an xml file. See
http://problemswiththecontent.blogspot.com/2011/03/file-cannot-be-open...because