FBLoginKIt integration issue +[FBSDKInternalUtility areAllPermissionsReadPermissions:]: unrecognized selector

App crashes when tapping on FBSDKLoginButton:

 @property (weak, nonatomic) IBOutlet FBSDKLoginButton *fbLoginButton;

- (void)viewDidLoad {
    [super viewDidLoad];
    [_fbLoginButton setReadPermissions:@[@"public_profile", @"email", @"user_friends"]];
    [_fbLoginButton setDelegate:self];
}

Nothing more than this but when tap on the button app crashes with below messages.

 *** Terminating app due to uncaught exception
 'NSInvalidArgumentException', reason: '+[FBSDKInternalUtility areAllPermissionsReadPermissions:]: 
unrecognized selector sent to class 0x100296a00'

Solution

I ran into this error when I was using two different Facebook frameworks (specifically FBSDKCoreKit.framework and FBSDKLoginKit.framework) that were from different release packages.

Make sure that all of your Facebook frameworks are from the same release package. You can see a list of stable releases here.

This issue can also come up when using a service like Gigya that intergrates with Facebook's SDK. If you're using Gigya, make sure you're using the version of the Facebook SDK that they recommend rather than the latest version.