Android Question Error AdMob Library - #AdditionalRes:.. com.google.android.gms

Hi all.
I have this problem about android 2.2 ( you see image in attachment ):
The App crash in some devices and i have this message:
java.lang.NoSuchMethodError: java.io.IOException.<init>
at com.google.android.gms.internal.k.f(Unknown Source)
at com.google.android.gms.internal.k.b(Unknown Source)
at com.google.android.gms.internal.i.a(Unknown Source)
at com.google.android.gms.internal.i.a(Unknown Source)
at com.google.android.gms.internal.bz.aB(Unknown Source)
at com.google.android.gms.internal.ct$1.run(Unknown Source)
at com.google.android.gms.internal.cu$1.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
at java.lang.Thread.run(Thread.java:1096)

now.. all devices have O.S Android 2.2
i think that this depend AdMob Library. You add this code to work:


Tutorial AdMod

Any Idea ???
Thank you all