title: Firebase crash while using GCM
body: <p>I'm facing a very weird issue. I just upgraded my play-services dependencies from version <strong>10.0.1</strong> to <strong>10.2.0</strong></p>
  
  <p>I'm using these now:</p>
  
  <pre><code>compile 'com.google.android.gms:play-services-maps:10.2.0'
  compile 'com.google.android.gms:play-services-location:10.2.0'
  compile 'com.google.android.gms:play-services-gcm:10.2.0'
  </code></pre>
  
  <p>Now my app crashes every time I receiver a push notification. Notification is displayed and right after that I get a dialog saying that my app stopped working.</p>
  
  <p><strong>Crash LOG</strong></p>
  
  <pre><code>FATAL EXCEPTION: main
                 Process: com.avantcar.a2go, PID: 581
                 java.lang.NoSuchMethodError: No static method zzaaj()Lcom/google/firebase/iid/zzg; in class Lcom/google/firebase/iid/zzg; or its super classes (declaration of 'com.google.firebase.iid.zzg' appears in /data/app/com.avantcar.a2go-1/base.apk:classes69.dex)
                 at com.google.firebase.messaging.FirebaseMessagingService.zzF(Unknown Source)
                 at com.google.firebase.iid.zzb.onStartCommand(Unknown Source)
                 at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3010)
                 at android.app.ActivityThread.-wrap17(ActivityThread.java)
                 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1442)
                 at android.os.Handler.dispatchMessage(Handler.java:102)
                 at android.os.Looper.loop(Looper.java:148)
                 at android.app.ActivityThread.main(ActivityThread.java:5417)
                 at java.lang.reflect.Method.invoke(Native Method)
                 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
  </code></pre>
  
  <p>It seems like it's crashing because of something related to FCM, but I am not using FCM in my app yet. I'm still using GCM.</p>