AdMob Android 2.2 error
===

I am using AdMob 6 for android 2.2 and I see this message in the xml layout
"The following classes could not be instantiated:
-  (Open Class, Show Error Log)
See the Error Log (Window > Show View) for more details."
When I run my application it says "Unfortunately ... has stopped."

This is what my manifest looks like

<uses-sdk android:minSdkVersion="8" />

    <uses-permission android:name="android.permission.SET_WALLPAPER" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name="com.google.ads.AdActivity"
            android:configChanges="keyboard|keyboardHidden|orientation|screenLayout" >
            >

Is there anything I can do to get this working?
Thank,
-Steven