problema con andengine

ciao a tutti ho un piccolo problema.... apparentemente il codice scritto è tutto ok eppure una volta in runtime crassha e in logcat mi riempie di rosso :p
questo è il logcat

codice:

08-23 10:22:54.723: W/dalvikvm(1196): threadid=1: thread exiting with uncaught exception (group=0x409c01f8) 08-23 10:22:54.743: E/AndroidRuntime(1196): FATAL EXCEPTION: main 08-23 10:22:54.743: E/AndroidRuntime(1196): java.lang.NullPointerException 08-23 10:22:54.743: E/AndroidRuntime(1196): at com.example.facem.MainActivity.onLoadScene(MainActivity.java:113) 08-23 10:22:54.743: E/AndroidRuntime(1196): at org.anddev.andengine.ui.activity.BaseGameActivity.doResume(BaseGameActivity.java:169) 08-23 10:22:54.743: E/AndroidRuntime(1196): at org.anddev.andengine.ui.activity.BaseGameActivity.onWindowFocusChanged(BaseGameActivity.java:85) 08-23 10:22:54.743: E/AndroidRuntime(1196): at com.android.internal.policy.impl.PhoneWindow$DecorView.onWindowFocusChanged(PhoneWindow.java:2366) 08-23 10:22:54.743: E/AndroidRuntime(1196): at android.view.View.dispatchWindowFocusChanged(View.java:5735) 08-23 10:22:54.743: E/AndroidRuntime(1196): at android.view.ViewGroup.dispatchWindowFocusChanged(ViewGroup.java:851) 08-23 10:22:54.743: E/AndroidRuntime(1196): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2557) 08-23 10:22:54.743: E/AndroidRuntime(1196): at android.os.Handler.dispatchMessage(Handler.java:99) 08-23 10:22:54.743: E/AndroidRuntime(1196): at android.os.Looper.loop(Looper.java:137) 08-23 10:22:54.743: E/AndroidRuntime(1196): at android.app.ActivityThread.main(ActivityThread.java:4424) 08-23 10:22:54.743: E/AndroidRuntime(1196): at java.lang.reflect.Method.invokeNative(Native Method) 08-23 10:22:54.743: E/AndroidRuntime(1196): at java.lang.reflect.Method.invoke(Method.java:511) 08-23 10:22:54.743: E/AndroidRuntime(1196): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 08-23 10:22:54.743: E/AndroidRuntime(1196): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 08-23 10:22:54.743: E/AndroidRuntime(1196): at dalvik.system.NativeStart.main(Native Method) 08-23 10:22:55.323: I/dalvikvm(1196): threadid=3: reacting to signal 3 08-23 10:22:55.343: I/dalvikvm(1196): Wrote stack traces to '/data/anr/traces.txt'

e questo è il codice

codice:

package com.example.facem; import java.util.Random; import org.anddev.andengine.engine.Engine; import org.anddev.andengine.engine.camera.Camera; import org.anddev.andengine.engine.options.EngineOptions; import org.anddev.andengine.engine.options.EngineOptions.ScreenOrientation; import org.anddev.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy; import org.anddev.andengine.entity.primitive.Line; import org.anddev.andengine.entity.scene.Scene; import org.anddev.andengine.input.touch.TouchEvent; import org.anddev.andengine.entity.sprite.Sprite; import org.anddev.andengine.entity.scene.background.ColorBackground; import org.anddev.andengine.opengl.texture.Texture; import org.anddev.andengine.opengl.texture.TextureOptions; import org.anddev.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas; import org.anddev.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory; import org.anddev.andengine.opengl.texture.region.TextureRegion; import org.anddev.andengine.opengl.texture.region.TextureRegionFactory; import org.anddev.andengine.ui.activity.BaseGameActivity; import android.annotation.SuppressLint; import android.view.Display; @SuppressLint("ParserError") public class MainActivity extends BaseGameActivity { /* * instanzio telecamera */ //larghezza camera private int CAMERA_WIDTH; //altezza camera private int CAMERA_HEIGHT; //Camera private Camera mCamera; /* * instanzio grafica */ //instanzio la texture private BitmapTextureAtlas fT; //instanzio la region della texture private TextureRegion fTR; //carico il motore public Engine onLoadEngine() { //setto la grandezza dello schermo in base al dispositivo final Display dis = getWindowManager().getDefaultDisplay(); CAMERA_WIDTH = dis.getWidth(); CAMERA_HEIGHT = dis.getHeight(); //parametrizzo la camera mCamera =new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT); //parametrizzo engine EngineOptions eo = new EngineOptions(true, ScreenOrientation.PORTRAIT, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT),mCamera); //ritorno l'engine con le opzioni return new Engine(eo); } //carico le risorse public void onLoadResources() { /* Inizializziamo la Texure */ this.fT = new BitmapTextureAtlas(64, 64, TextureOptions.BILINEAR); //setto la cartella del png BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/"); //creiamo la texture region a partire dal png scelto fTR = BitmapTextureAtlasTextureRegionFactory.createFromAsset(fT, this, "face.png", 0, 0); //carico le texture nel motore mEngine.getTextureManager().loadTexture(fT); } public Scene onLoadScene() { //dichiaro le scene final Scene scene = new Scene(); //SETTO IL BAK scene.setBackground(new ColorBackground(0.09804f, 0.6274f, 0.8784f)); /* Ricaviamo le coordinate del centro della scena */ final int x = ((CAMERA_WIDTH - fTR.getWidth()) / 2); final int y = ((CAMERA_HEIGHT - fTR.getHeight()) / 2); //creo lo sprite final Sprite face = new Sprite(x,y,fTR) //gestisco il drug and drop { @Override public boolean onAreaTouched(TouchEvent ev , float pSTAX, float pSTAY) { this.setPosition(ev.getX() - this.getWidth() / 2, ev.getY() - this.getHeight() / 2); return true; } }; //ingrandisco lo sprite face.setScale(3); //rendo draggabile lo sprite scene.registerTouchArea(face); scene.setTouchAreaBindingEnabled(true); //attacco la linea alla scena scene.getLastChild().attachChild(face); return scene; } public void onLoadComplete() { } }

qualche idea?
grazie mille ;)