Unable to test app after upgrading to Lollipop

Question

I am using Android Studio to develop my apps.

Since I upgraded my HTC One M8 to Lollipop, I can not use it to test my apps by \"Run app\" in Android Studio. I get

Answer 1

On my HTC M8, I resolved the issue by disabling "Settings -> Developer options -> Use NuPlayer(experimental)"

What I have noticed is, when I try to run the application I created long back (few years ago), I have to disable the NuPlayer. However, with new applications, I must keep the option checked.

Hope this helps....