hlink.dll and idndl.dll problem

I am unable to use links from Windows Live Mail to Internet Explorer and receive a message that either h.link.dll or idndl.dll is not designed to run in Window or contains an error. If I access the mail using the web browser (BT Yahoo) the link in the mail operates perfectly and directs me to the web page. I have tried a windows live mail repair, uninstalled Live Essential and reinstalled it but all to no effect. Can anyone help please.