Unable to test app after upgrading to Lollipop

I was facing the same error on Asus Zenfone 5 (ASUS_T00J) with Android 5.0. For me the solution was to switch off the “Verify Apps over USB” in the “Developer Options”.
Launcher may not be the issue since I tried with Google Now Launcher as well without success. It was working fine on my Nexus 5 with Android 5.1

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