I use Windows Live mail 2012 and recently all the e-mails started to be shown as an attached htm file in the e-mail. Some times, when I restart the program it show the messages as normal for few click and then go back to this view of htm files. 

I tried to install the last update (d-Mail.msp) but the installer told me the program may be missing.

Is there any chance to change the view of the e-mails to be normal? Or to stop worry and change the e-mail client?