I have a admob project that works great when the android version in project properties is set to 2.3. But When I try to set on 1.6 then it complaints in the android manifest at this lines
<activity android:name="com.google.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />
I’d guess that you need to check which tags are supported in that SDK version.
See here.
See that uiMode was added in SDK 8 and screenSize in 13. Try that.
Here it works even in 1.5. Just an example: