phonegap android app only showing connecting to device

I AM creating a phonegap android app. I am creating this app using help of this tutorial. When i am istalling this app on device its onDeviceReady function is not working. It is only showing coneecting to device. My onDeviceReady function is below:-

onDeviceReady: function() {
    app.receivedEvent('deviceready');
    alert('device ready');
    try {
        var pushNotification = window.plugins.pushNotification;
        pushNotification.register(app.successHandler, app.errorHandler,{"senderID":"41327727848","ecb":"app.onNotificationGCM"});
    } catch (ex) {
        alert('error: ' + ex);
    }
},

It does not alert anything. I can't find the error.