GCMRegistrar Crash with ECPN plugin for unity android - push-notification

Question

I encountered a severe problem with the ECPN plugin (push notification) for android. As client needs it these days and push notification is my last hurdle......
OK, I changed your plugin quite a bit, just to work with my own purpose. It seems that my Samsung S4 and Sony Xperia got crash whenever gcm.jar is used, for example:
#Override
public void onCreate(Bundle savedInstance) {
super.onCreate(savedInstance);
Intent i = getIntent();
Boolean isRegistration = getIntent().getExtras().getBoolean("isRegistration ");
/*
if(!isRegistration) {
// Unregister device
GCMRegistrar.unregister(this);
} else {
// Carry on with registration
String SENDER_ID = i.getStringExtra("senderID");
// Checking device and manifest dependencies
*/
GCMRegistrar.checkDevice(this);
// GCMRegistrar.checkManifest(this);
// Get GCM registration id
//final String regId = GCMRegistrar.getRegistrationId(this);
/*
// Check if regid already presents
if (regId.equals("")) {
// Registration is not present, register now with GCM
GCMRegistrar.register(this, SENDER_ID);
} else {
// Send ID to Unity
sendConfirmRegistration(regId);
// if registeredOnServer flag is not set, send info to Unity
if (!GCMRegistrar.isRegisteredOnServer(this)) {
GCMRegistrar.setRegisteredOnServer(this, true);
}
}
}
*/
finish();
return;
}
The procedure crashes at the bold line. Any idea why it is so ?
My bundleID is com.redcross.redcross, below is my manifest file for GCM portion.
<!-- GCM java -->
<activity
android:name="com.redcross.redcross.GCMJava"
android:label="#string/app_name" > <!-- android:name must coincide with GCMJava package name + .GCMJava-->
</activity>
<receiver android:name="com.google.android.gcm.GCMBroadcastR eceiver" androidermission="com.google.android.c2dm.permission.SEND " >
<intent-filter>
<!-- Receives the actual messages. -->
<action android:name="com.google.android.c2dm.intent.RECEI VE" />
<!-- Receives the registration id. -->
<action android:name="com.google.android.c2dm.intent.REGIS TRATION" />
<category android:name="com.redcross.redcross" /> <!-- android:name must coincide with GCMJava package name -->
</intent-filter> </receiver>
<service android:name="com.redcross.redcross.GCMIntentServi ce" /> <!-- android:name must coincide with GCMJava package name + .GCMIntentService-->
<!-- end -->
And I tried putting classes.jar, gcm.jar and android.jar around in unity asset folder => plugins => android and referenced inside or outside GCMJava.jar, it simply doesn't work out... Worked two whole days already...
Really appreciate your help ...