Hi All, I have fixed all the warnings in the Game Center code for the BT_ViewController.m file (based on MGoBlue's Tutorial) Here is the code: (You can copy and paste below the @Synthasize statements) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @synthesize gameCenterManager; @synthesize currentScore; @synthesize currentLeaderBoard; @synthesize currentScoreLabel; //Start Game Center //GameCenter View Did Load -(void)viewDidLoad { [super viewDidLoad]; self.currentLeaderBoard = kLeaderboardID; self.currentScore = 0; if ([GameCenterManager isGameCenterAvailable]) { self.gameCenterManager = [[[GameCenterManager alloc] init] autorelease]; [self.gameCenterManager setDelegate:self]; [self.gameCenterManager authenticateLocalUser]; } else { // The current device does not support Game Center. } } - (IBAction) showLeaderboard { GKLeaderboardViewController *leaderboardController = [[GKLeaderboardViewController alloc] init]; if (leaderboardController != NULL) { leaderboardController.category = self.currentLeaderBoard; leaderboardController.timeScope = GKLeaderboardTimeScopeWeek; leaderboardController.leaderboardDelegate = self; [self presentViewController:leaderboardController animated:YES completion:nil]; } } - (void)leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController { [self dismissViewControllerAnimated:YES completion:nil]; [viewController release]; } - (IBAction) showAchievements { GKAchievementViewController *achievements = [[GKAchievementViewController alloc] init]; if (achievements != NULL) { achievements.achievementDelegate = self; [self presentViewController:achievements animated:YES completion:nil]; } } - (void)achievementViewControllerDidFinish:(GKAchievementViewController *)viewController; { [self dismissViewControllerAnimated:YES completion:nil]; [viewController release]; } //GameCenter View Did Unload - (void)viewDidUnload { [super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; self.gameCenterManager = nil; self.currentLeaderBoard = nil; self.currentScoreLabel = nil; } - (void)dealloc { [gameCenterManager release]; [currentLeaderBoard release]; [currentScoreLabel release]; [super dealloc]; } //End Game Center ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Don't forget to #import the following: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #import "AppSpecificValues.h" #import "GameCenterManager.h" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Jake

Thanks Jake! One less thing to worry about :) Cheers! -- Smug

I keep getting an error - unexpected @ in program on the last line here: //Start Game Center //GameCenter View Did Load -(void)viewDidLoad { [super viewDidLoad]; self.currentLeaderBoard = kLeaderboardID; self.currentScore = 0; Any ideas???

Try to remove the space between the ID and current score. Then put the self.currentScore on its own line. Jake

That got it, thank you