Crash when retrive device token in Android

Application type: mobile Titanium SDK: 3.2.0.GA Device: Android device Host Operating System: Mac OSX 10.8.5 Titanium Studio, build: 3.2.1.201402041146

I've got one problem when I try to retrive the device token in an Android App with this code

if (Ti.Platform.osname == "android") {          
    var CloudPush = require('ti.cloudpush');
    CloudPush.debug = true;
        CloudPush.showTrayNotificationsWhenFocused = true;
    CloudPush.focusAppOnPush = false;
    var deviceToken;
 
    var Cloud = require('ti.cloud');
    Cloud.debug = true;
 
    //when the app arrives here there's the crash
    CloudPush.retrieveDeviceToken({
        success : function deviceTokenSuccess(e) {
            deviceToken = e.deviceToken;
        }
    });
}

when I launch the app it crashes with this message in console

[ERROR] :  GooglePlayServicesUtil: The Google Play services resources were not found. Check your project configuration to ensure that the resources are included.
[ERROR] :  TiApplication: (AsyncTask #1) [40783,47257] Sending event: exception on thread: AsyncTask #1 msg:java.lang.RuntimeException: An error occured while executing doInBackground(); Titanium 3.2.0,2013/12/20 10:57,d9182d6
[ERROR] :  TiApplication: java.lang.RuntimeException: An error occured while executing doInBackground()
[ERROR] :  TiApplication:   at android.os.AsyncTask$3.done(AsyncTask.java:300)
[ERROR] :  TiApplication:   at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
[ERROR] :  TiApplication:   at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
[ERROR] :  TiApplication:   at java.util.concurrent.FutureTask.run(FutureTask.java:242)
[ERROR] :  TiApplication:   at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
[ERROR] :  TiApplication:   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
[ERROR] :  TiApplication:   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
[ERROR] :  TiApplication:   at java.lang.Thread.run(Thread.java:811)
[ERROR] :  TiApplication: Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'void org.appcelerator.kroll.KrollFunction.callAsync(org.appcelerator.kroll.KrollObject, java.util.HashMap)' on a null object reference
[ERROR] :  TiApplication:   at ti.cloudpush.CloudpushModuleGeneric$1$1.failedReceiveDeviceToken(CloudpushModuleGeneric.java:622)
[ERROR] :  TiApplication:   at com.appcelerator.cloud.push.CCPushService.registerGCMService(CCPushService.java:334)
[ERROR] :  TiApplication:   at com.appcelerator.cloud.push.CCPushService.registerGCM(CCPushService.java:280)
[ERROR] :  TiApplication:   at ti.cloudpush.CloudpushModuleGeneric$1.receivedGCMSenderId(CloudpushModuleGeneric.java:609)
[ERROR] :  TiApplication:   at com.appcelerator.cloud.push.CCPushService$1.doInBackground(CCPushService.java:91)
[ERROR] :  TiApplication:   at com.appcelerator.cloud.push.CCPushService$1.doInBackground(CCPushService.java:85)
[ERROR] :  TiApplication:   at android.os.AsyncTask$2.call(AsyncTask.java:288)
[ERROR] :  TiApplication:   at java.util.concurrent.FutureTask.run(FutureTask.java:237)
[ERROR] :  TiApplication:   ... 4 more

I used the code above in other application that I've done in the past and there weren't problems. I already set in tiapp.xml to use GCM, and I downloaded Google Play Services in the android sdk.

Thanks, Alberto