Session 'app': Error Launching activity
<p>After the Android Studio 2.0 update while the gradle build  finishes I get this :</p>
<p>Session 'app': Error Launching activity .</p>
<p>It prevents the app from starting but it's installed in my emulator.
This is what comes up in the Run tab :</p>
<blockquote>
<p>Unexpected error while executing: am start -n &quot;com.example.user.ypologismosmoriwn/com.example.user.ypologismosmoriwn.MainActivity&quot; -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Error while Launching activity</p>
</blockquote>
<p>Here is the code:</p>
<pre><code>package com.example.user.ypologismosmoriwn;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}
</code></pre>
<p>It's just an empty Activity,nothing added</p>
<p>and the XML code is just a Relative Layout with 4 Texts and 3 Check Boxes</p>
<p><a href="http://pastebin.com/GyV82kP6" rel="noreferrer">This is the logcat i am getting</a></p>
<p>Thanks anyone who is willing to help</p>