Help Application not installed msg

[Android Question]

Since updating to marshmallow, my direct dial app doesn't work any more. When I touch the speed dial icon, it says the "Application not installed". I uninstalled and reinstalled the app. I've restarted the phone. The app shows up in the application manager. Any ideas how to get it to work again?

 

[Hadron]

I suggest contacting the developer - the app may need updating for MMS.