Problem with Ti.Platform when a Service is running

Hi! I have the following issue with my Android app:

When the app gets started, I create a Service Intent checking if it already exists. If it is already created I do nothing and if it is not, then I do create it. This service will create a notification eventually. The first time the app starts it works fine, but the problem appears when I close It with the Back button and I open it again by some notification created with the service: Every time that the Ti.Platform is invoked the app crashes like if doesn't exist reference to it.

I supouse that the issue comes with the Service Intent creation because when I do not create it all works fine.

Here the steps that I already mentioned:

1) Open the app

2) Create the Service Intent in app.js

if(show == 1)
        {
            if(typeof(Ti.App.ServiceRunning) == 'undefined' || Ti.App.ServiceRunning == false)
            {
                if (typeof(Titanium.App.Android_Service) == 'undefined')
                {
                    var intent = Titanium.Android.createServiceIntent( { url: 'services_Android.js', startMode: Titanium.Android.START_NOT_STICKY } );
                    intent.putExtra('interval', 30000);//3600000 --> 1 hour
 
                    Titanium.App.Android_Service = Titanium.Android.createService(intent);              
                }
                Titanium.App.Android_Service.start();
            }
            Titanium.App.ServiceRunning = true;
        }
        else
        {
            if(typeof(Ti.App.ServiceRunning) != 'undefined' && Ti.App.ServiceRunning == true)
                Titanium.App.Android_Service.stop();
 
            Titanium.App.ServiceRunning = false;
        }

3) Wait until the notification is created in this way

var intent = Ti.Android.createIntent({
                    flags: Ti.Android.FLAG_ACTIVITY_REORDER_TO_FRONT || Ti.Android.FLAG_ACTIVITY_NEW_TASK, 
                    className: 'com.tisaSoftware.BeenMissingHouston.AppActivity'
    });
 
    intent.addCategory(Ti.Android.CATEGORY_LAUNCHER);
 
    // Create a PendingIntent to tie together the Activity and Intent
    var pendingIntent = Titanium.Android.createPendingIntent({
                          intent: intent,
                          flags: Titanium.Android.FLAG_UPDATE_CURRENT
    });
 
    // Create the notification
    var notification = Titanium.Android.createNotification({
                          icon: 0x7f020000,
                          contentTitle: notificationMessage,
                          contentText : 'Go to the application.',
                          contentIntent: pendingIntent
    });
 
    // Send the notification.
    Titanium.Android.NotificationManager.notify(blnHaveNewMissingPerson ? 666 : 777, notification);

4) Close the app with the "Back" button

    The win has the property *exitOnClose: true*

5) Open the app again by the notification

6) The app shows error messages like this when any Ti.Platform instance is invoked:

Runtime Error
Location: [0,0] null
Message: 
Source: 

Runtime Error
Location: [1,0] services_Android.js
Message: Wraped java.lang.NullPointerException (services_Android.js#1)
Source:

NOTE: It only happens with some phones, but not with the emulator and some other phones. For example, we have this issue in the Samsung Galaxy S2 or S3.

Some information: Application type: mobile / Titanium SDK: 2.1.2 (08/24/12 14:46 ed7f777) / Platform & version: Android 4.0.4 / Device: Samsung Galaxy S3 / Titanium Studio: 2.0.1.201204132053

Any idea?