I installed Microsoft Office 2003. Since then whenever I open either Word or
Excel I get the following error: "eReference Embedding - unknown application
version"

The error is related to having installed previously the American Heritage
Dictionary 4th edition that has an add-in for office applications. I
installed the patch for office offered by Houghton Mifflin Company but the
error continues. They do not provide support for the problem. Therefore I
unintalled the dictionary but the error continues!

Any suggestion?