title: com.google.ads.adview failed to instantiate cause of Admob
body: <p>I just got a error after I installed Admob on my App.
  In a way its weird... I can run my app and my ad is also shown but in
  the Graphical Layout View . He tells me this :</p>
  
  <pre><code>   The following classes could not be instantiated:
      - com.google.ads.AdView (Open Class, Show Error Log)
      See the Error Log (Window &gt; Show View) for more details.
  </code></pre>
  
  <p>When I take a look in the Error Log it says :</p>
  
  <pre><code>com.google.ads.adview failed to instantiate
  </code></pre>
  
  <p>My Code </p>
  
  <pre><code>&lt;RelativeLayout 
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:ads ="http://schemas.android.com/apk/lib/com.google.ads"
  xmlns:tools="http://schemas.android.com/tools" 
  
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:paddingBottom="@dimen/activity_vertical_margin"
  android:paddingLeft="@dimen/activity_horizontal_margin"
  android:paddingRight="@dimen/activity_horizontal_margin"
  android:paddingTop="@dimen/activity_vertical_margin"
  android:background="@drawable/lined2"
  tools:context=".MainActivity" &gt;
  
  &lt;com.google.ads.AdView
         android:id="@+id/adview"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:layout_alignLeft="@+id/button4"
         android:layout_alignParentBottom="true"
         ads:adSize="BANNER"
         ads:adUnitId="MY ID"
         ads:loadAdOnCreate="true"
         ads:testdevices="TEST_EMULATOR" &gt;
     &lt;/com.google.ads.AdView&gt;
  </code></pre>
  
  <p>Someone got a Idea ?
  Can I ignore this ?</p>