Received memory warning. Level=2. Data Formatters temporarily unavailable, will re-try after a 'continue'

I am using cocos2d 0.99.4 and Xcode 4.0. so, I changed my AppDelegate in this way according to the documentation and example given in 0.99.4 version.

- (void) applicationDidFinishLaunching:(UIApplication*)application
{
    window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    [CCDirector setDirectorType:kCCDirectorTypeDisplayLink];
    CCDirector *director = [CCDirector sharedDirector];
    [director setDeviceOrientation:kCCDeviceOrientationLandscapeLeft];
    [director setAnimationInterval:1.0/60];
    [director setDisplayFPS:NO];
    EAGLView *glView = [EAGLView viewWithFrame:[window bounds]
                               pixelFormat:kEAGLColorFormatRGBA8            
                               depthFormat:GL_DEPTH_COMPONENT24_OES   
                    preserveBackbuffer:NO];

    [[CCDirector sharedDirector] setOpenGLView:glView];

    [window addSubview:glView];
    [window makeKeyAndVisible]; 

    [CCTexture2D setDefaultAlphaPixelFormat:kCCTexture2DPixelFormat_RGBA8888];
    gameLevel = [[NSUserDefaults standardUserDefaults] integerForKey:@"gameLevel"] ;
    gameLevel = 1;

    CCScene *scene = [CCScene node];
    CCLayer *layer = [GamewinScreen node];  
    [scene addChild :layer];

    [[CCDirector sharedDirector] runWithScene: scene];  

}  

//The method test1 is also in the app Delegate class.

 -(void)test1
{

    [[CCDirector sharedDirector] end];
    [[CCDirector sharedDirector] setOpenGLView:[[window subviews] objectAtIndex:0]];    

    CCScene *Scene = [CCScene node];
    CCLayer *Layer = [OpeningScreen node];

    [Scene addChild:Layer]; 

    [[CCDirector sharedDirector] runWithScene: Scene];
}

In GameWinScreen I have a selector @selector(goToFirstScreen),

-(void)goToFirstScreen:(id)sender
{
    [MY_DELEGATE performSelector:@selector(test1) withObject:nil afterDelay:1.0];
 }   

After playing the game for 50 minutes and more I am getting

Received memory warning. Level=1  

for more than 10 times and then

Received memory warning. Level=2

and the application is crashing. giving the following message

Program received signal:  “0”.
Data Formatters temporarily unavailabl开发者_StackOverflow社区e, will re-try after a 'continue'. (Unknown error loading shared library "/Developer/usr/lib/libXcodeDebuggerSupport.dylib")

alt text http://www.freeimagehosting.net/uploads/52ac11fe93.png

alt text http://www.freeimagehosting.net/uploads/619333a82f.png

This is cocos2d telling you that you are doing something wrong. You are calling setDirectorType on the director in goToFirstScreen, but the second time you call it there is already a director. I'm not sure why you are restarting the director. Why not just replace the scene:

-(void)goToFirstScreen:(id)sender
{
    CCScene *Scene = [CCScene node];
    CCLayer *Layer = [OpeningScreen node];
    [Scene addChild:Layer];
    [[CCDirector sharedDirector] replaceScene:Scene];
}