Trying to pass UIImage from one ViewController to my GameScene in spriteKit

I thought it would be interesting to learn how to pass an image from an imagePicker to my GameScene to use as a SKSpriteNode(texture: SKTexture(image: UIImage)) but i keep getting an error after selecting my image and pressing a button to go into my gameScene

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if (segue.identifier == "startSegue") {

        var gameViewController = segue.destinationViewController as GameScene

        gameViewController.imageToPass = pickedImage.image

    }

anyone know what im doing wrong?

keep getting exc_breakpoint (code=exc_i386_bpt, subcode 0x0) when initializing gameViewController as GameScene