Last I was told, they could not duplicate the problem of it creating a blank .doc. I even sent them the original file.
I agree there is a bug in their code somewhere.
I finally found a free trial of Works & used it to convert the files.
It's a shame they won't let us submit screen shots of what's going on instead for pulling the old tired, "If we can't get it to do it, it must be your imagination." card.