Dealloc gives warnings - objective-c

Question

I am practicing making a simple app that switches scenes with a scene controller (state manager) class.
I created my scene:
+(CCScene *) scene
{
CCScene *scene = [CCScene node];
GameMenu *layer = [GameMenu node];
[scene addChild: layer];
return scene;
}
-(id)init{
if ((self = [super init])){
self.isTouchEnabled = YES;
CGSize winSize = [[CCDirector sharedDirector] winSize];
gameMenuLabel = [CCLabelTTF labelWithString:#"This is the Main Menu. Click to Continue" fontName:#"Arial" fontSize:13];
gameMenuLabel.position = ccp(winSize.width/2, winSize.height/1.5);
[self addChild:gameMenuLabel];
}
return self;
}
-(void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
NSLog(#"ccTouchesBegan: called from MainMenu object");
[[StateManager sharedStateManager] runSceneWithID:kGamePlay];
}
-(void)dealloc{
[gameMenuLabel release];
gameMenuLabel = nil;
[super dealloc];
}
#end
But I keep getting this warning: https://dl.dropbox.com/u/1885149/Screen%20Shot%202012-10-06%20at%205.23.43%20PM.png (probably not much help, but figured I would link the screenshot.
I think it has something to do with the dealloc. If I comment out the dealloc in my scene, I do not get this warning. Any help would be greatly appreciated, thanks.
This is my statemanager's method for switching scenes:
-(void)runSceneWithID:(SceneTypes)sceneID {
SceneTypes oldScene = currentScene;
currentScene = sceneID;
id sceneToRun = nil;
switch (sceneID) {
case kSplashScene:
sceneToRun = [SplashScene node];
break;
case kGameMenu:
sceneToRun = [GameMenu node];
break;
case kGamePlay:
sceneToRun = [GamePlay node];
break;
case kGameOver:
sceneToRun = [GameOver node];
break;
default:
CCLOG(#"Unknown ID, cannot switch scenes");
return;
break;
}
if (sceneToRun == nil) {
// Revert back, since no new scene was found
currentScene = oldScene;
return;
}
if ([[CCDirector sharedDirector] runningScene] == nil) {
[[CCDirector sharedDirector] runWithScene:sceneToRun];
} else {
[[CCDirector sharedDirector] replaceScene:sceneToRun];
}
}

Answer 1

You should give a retain property to gameMenuLabel like this
#property (nonatomic, retain) CCLabelTTF* gameMenuLabel; //in .h file
And write this....
self.gameMenuLabel = [CCLabelTTF labelWithString:#"This is the Main Menu. Click to Continue" fontName:#"Arial" fontSize:13];
instead of this...
gameMenuLabel = [CCLabelTTF labelWithString:#"This is the Main Menu. Click to Continue" fontName:#"Arial" fontSize:13];
The problem is that you are giving an autoreleased object to gameMenuLabel and then releasing again that object in the dealloc section. Hence, the crash.