My developer console shows a couple of new crashes related to AdMob:
java.lang.SecurityException: Permission Denial: getTasks() from pid=1677, uid=10146 requires android.permission.GET_TASKS
at android.os.Parcel.readException(Parcel.java:1425)
at android.os.Parcel.readException(Parcel.java:1379)
at android.app.ActivityManagerProxy.getTasks(ActivityManagerNative.java:2317)
at android.app.ActivityManager.getRunningTasks(ActivityManager.java:688)
at android.app.ActivityManager.getRunningTasks(ActivityManager.java:724)
at com.google.android.gms.ads.internal.util.h.a(SourceFile:703)
at com.google.android.gms.ads.internal.a.a(SourceFile:1634)
at com.google.android.gms.ads.internal.a.a(SourceFile:530)
at com.google.android.gms.ads.internal.client.t.onTransact(SourceFile:81)
at android.os.Binder.transact(Binder.java:326)
at
com.google.android.gms.internal.bd$a$a.a(Unknown Source)
at com.google.android.gms.internal.bi.a(Unknown Source)
at com.google.android.gms.ads.InterstitialAd.loadAd(Unknown Source)