Doesn't work unless I start my project with SNC in didFinishLaunchingWithOptions

[jamrader]

I'm trying to start the SNC by a button in a viewcontroller. If I use the following code in that button, the SlideNavigationController's left menu doesn't work (it's completely unresponsive). However, if I paste the EXACT SAME CODE in ApplicationDidFinishLaunchingWithOptions, then everything works fine.

 NSString *bundlePath = [[NSBundle mainBundle] pathForResource:@"Lights" ofType:@"bundle"];
    NSBundle *lights = [NSBundle bundleWithPath:bundlePath];

    UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:lights];
    SlideNavigationController *nc = (SlideNavigationController*)[sb instantiateViewControllerWithIdentifier: @"SlideNavigationController"];
    ViewController *vc = [sb instantiateViewControllerWithIdentifier:@"ViewController"];

    MenuViewController * _mvc = [[MenuViewController alloc] initWithNibName:@"MenuViewController" bundle: lights];
    [SlideNavigationController sharedInstance].leftMenu = _mvc;
    [SlideNavigationController sharedInstance].rightMenu = vc;
    self.window.rootViewController = nc; //(or [self presentvc: ... ]

EDIT: Looks like I found out what was wrong (still haven't fixed it). A UITransitionView is covering the LeftMenuVC, so it can't be touched.