Adobe AIR 3.1 Native Extension for Android - null extension context in actionscript

I'm working on Native Extension for Android platform and i got stuck...

Targeting Android 2.1... testing on Google Nexus One (2.3.6)

this line returns NULL

this.context = ExtensionContext.createExtensionContext("com.company.ane.LocationManager", "");

this is extension descriptor file:

<extension xmlns="http://ns.adobe.com/air/extension/3.1">
<id>com.company.ane.LocationManager</id>
<versionNumber>0.0.1</versionNumber>
<platforms>
<platform name="iPhone-ARM">
  <applicationDeployment>
    <nativeLibrary>libANELocationManager.a</nativeLibrary>
    <initializer>ExtInitializer</initializer>
    <finalizer>ExtFinalizer</finalizer>
  </applicationDeployment>
</platform>
<platform name="Android-ARM">
<applicationDeployment>         
   <nativeLibrary>libANELocationManager.jar</nativeLibrary>
     <initializer>com.company.ane.android.ANELocationManager</initializer>
</applicationDeployment> 
       </platform></platforms></extension>

that is my package command:

adt -package -target ane ./../../app/libs/locationmanager.ane ./../extension.xml -swc ane_location_manager.swc -platform iPhone-ARM library.swf libANELocationManager.a -platform Android-ARM library.swf libANELocationManager.jar

At this stage extension is really simple... i'm just trying to return string value back to my app...

package com.company.ane.android;

import java.util.HashMap;
import java.util.Map;

import com.adobe.fre.FREContext;
import com.adobe.fre.FREFunction;

import android.location.LocationListener;
import android.location.LocationManager;

public class ANELocationManagerContext extends FREContext {

public LocationManager locationManager;
public LocationListener locationListener;

@Override
public void dispose()