java.lang.NoClassDefFoundError: 
  at com.google.android.gms.internal.zzark.zzbl (Unknown Source)
  at com.google.android.gms.analytics.CampaignTrackingReceiver.onReceive (Unknown Source)
  at android.app.ActivityThread.handleReceiver (ActivityThread.java:3703)
  at android.app.ActivityThread.access$2000 (ActivityThread.java:231)
  at android.app.ActivityThread$H.handleMessage (ActivityThread.java:1905)
  at android.os.Handler.dispatchMessage (Handler.java:102)
  at android.os.Looper.loop (Looper.java:148)
  at android.app.ActivityThread.main (ActivityThread.java:7422)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:1230)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1120)
Caused by: java.lang.ClassNotFoundException: 
  at dalvik.system.BaseDexClassLoader.findClass (BaseDexClassLoader.java:56)
  at java.lang.ClassLoader.loadClass (ClassLoader.java:511)
  at java.lang.ClassLoader.loadClass (ClassLoader.java:469)