I've had this problem and I can't find a solution. I'm using Intellij. I have the SDK set to Android 4.03, target=android-13, android:minSdkVersion="8" android:targetSdkVersion="15", and still I get a compile error
... error: Error: String types not allowed (at 'configChanges' with value 'keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize').
It highlights just the 'screenSize|smallestScreenSize' part, but without those two the AdMob ads don't work.
Can anyone help?