title: libcore.io.ErrnoException open failed: ENOENT (No such file or directory) in Android Studio
body: <p>I have created  the simplest program in Android studio 0.3.7.</p>
  
  <pre><code>public class test extends Activity implements View.OnClickListener {
  
  TextView tt;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_test);
      Button button = (Button) findViewById(R.id.button);
      tt = (TextView) findViewById(R.id.Sett);
      button.setOnClickListener(this);
  }
  @Override
  public void onClick(View v) {
      switch(v.getId()){
          case R.id.button:
              tt.setText("Running");
              break;
  }
  }
  }
  </code></pre>
  
  <p>but i result i find error in logcat. How to avoid this error?
  i tried to find the solution but didnt find.
  Also i find that other my projects have this problem too. </p>
  
  <pre><code>12-07 15:31:57.653      232-269/? E/ActivityManager﹕ mtprof entry can not found!
  java.io.FileNotFoundException: /proc/mtprof/status: open failed: ENOENT (No such file or directory)
          at libcore.io.IoBridge.open(IoBridge.java:448)
          at java.io.FileInputStream.&lt;init&gt;(FileInputStream.java:78)
          at java.io.FileInputStream.&lt;init&gt;(FileInputStream.java:105)
          at com.android.server.am.ActivityRecord.mtProf(ActivityRecord.java:852)
          at com.android.server.am.ActivityRecord.windowsDrawn(ActivityRecord.java:653)
          at com.android.server.am.ActivityRecord$Token.windowsDrawn(ActivityRecord.java:225)
          at com.android.server.wm.WindowManagerService$H.handleMessage(WindowManagerService.java:6994)
          at android.os.Handler.dispatchMessage(Handler.java:99)
          at android.os.Looper.loop(Looper.java:154)
          at com.android.server.wm.WindowManagerService$WMThread.run(WindowManagerService.java:754)
   Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)
  </code></pre>