Millennial Media interstitial crash
<p>In the onCreate() method of the activity I want the interstitial to appear in, 
I have the following code:</p>

<pre><code>MMAdView interAdView = new MMAdView(this, MY_APP_ID, MMAdView.FULLSCREEN_AD_LAUNCH, true, null);
interAdView.fetch();
interAdView.setListener(new BasicMMAdListener()
{
 @Override
 public void MMAdCachingCompleted(MMAdView adview, boolean success)
 {
   if(success)
     adview.display();
 }
});
</code></pre>

<p>The code compiles without error, but at runtime I get the following Log output
which indicates an error at the first line of my code snippet, i.e. the one 
starting: <code>MMAdView interAdView = new MMAdView(this, ...</code></p>

<pre><code>Could not find class 'com.millennialmedia.android.MMAdView', referenced from method com.mycompany.mygame.myactivity.onCreate
</code></pre>

<p>I am puzzled because I thought that if there was somehow a missing 
class then the app should not compile.</p>
