I bought and registered Socrates CD and installed on my xp system, I also have an installed Microsoft office home and student 2007...includes word, excel,power point and onenote...I down loaded the socrates cd but when I try to open the browser it will not open when I look into my C drive program files and open socrates I get this message as followes...An invalid charater was found in text content. Error processing resourse 'file:///C:Program Files/ SocratesMedia/ plato. xml...