     }
 
     private func tintedIconButton(iconNamed iconName: String) -> UIButton {
-        let iconImage = UIImage(named: iconName).imageWithRenderingMode(.AlwaysTemplate)
-        let borderImage = UIImage(named: "ButtonRoundRect").imageWithRenderingMode(.AlwaysTemplate)
+        let iconImage = UIImage(named: iconName)!.imageWithRenderingMode(.AlwaysTemplate)
+        let borderImage = UIImage(named: "ButtonRoundRect")!.imageWithRenderingMode(.AlwaysTemplate)
 
         let button = UIButton(frame: CGRect(origin: CGPointZero, size: borderImage.size))
         button.setBackgroundImage(borderImage, forState: .Normal)

        scrollView.backgroundColor = UIColor.blackColor()
        self.view.addSubview(scrollView)

        let yosemiteImage = UIImage(named: "Yosemite")
        let backgroundImageView = UIImageView(image: yosemiteImage)
        scrollView.addSubview(backgroundImageView)


        statusBar.superview!.insertSubview(statusBarBlurView, belowSubview: statusBar)
        self.view.addSubview(statusBarBlurView)

        let statusBarBackgroundImage = UIImage(named: "MaskPixel")!.imageWithRenderingMode(.AlwaysTemplate)
        let statusBarBackgroundView = UIImageView(image: statusBarBackgroundImage)
        statusBarBackgroundView.frame = statusBarVibrancyView.bounds
        statusBarBackgroundView.autoresizingMask = .FlexibleWidth | .FlexibleHeight
