I can't access my dial pad to make calls. The last few days when I go to the phone a pop up appears that says "unfortunatly contacts has stopped working" after pressing ok to remove the pop up, it goes back to the home screen. This also happens when I

[Lwilk12318]

The last several days I have not been able to access the dial pad.  When I go to phone a pop up appears that says "unfortunatly contacts has stopped working."  To remove the pop up you have to hit 'ok', the it goes back to the home screen.  This also happens when I go to contacts.