This problem began December 15, 2013.  When I try to open a link on an email I get an error message "There is a problem sending the command to the program".  Some times this same error message opens up even when I am trying to open an email with no links or attachments.  If I click on a link several times the web page will open but I still get that error message.  I am using IE9 as IE8 isn't available on this computer.  I have Windows 7.