rubymotion broken

gistfile1.rb

class MainController < UIViewController

  def viewDidLoad
    setupVideo()
  end

  def setupVideo
    @session = AVCaptureSession.alloc.init
    @session.sessionPreset = AVCaptureSessionPresetLow

    @device = AVCaptureDevice.defaultDeviceWithMediaType AVMediaTypeVideo
    @input = AVCaptureDeviceInput.deviceInputWithDevice @device, error:nil
    @output = AVCaptureVideoDataOutput.alloc.init
    @output.alwaysDiscardsLateVideoFrames = true

    queue = Dispatch::Queue.new('cameraQueue')
    @output.setSampleBufferDelegate self, queue:queue.dispatch_object
    @output.setVideoSettings KCVPixelBufferPixelFormatTypeKey => KCVPixelFormatType_32BGRA
    
    session.addInput @input
    session.addOutput @output

    @session.startRunning
  end

  def captureOutput(captureOutput, didOutputSampleBuffer:sampleBuffer, fromConnection:connection)    
    #imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer)    
    #image = CIImage.imageWithCVImageBuffer(imageBuffer)
        
    #Dispatch::Queue.main.sync do

    #end
    nil
  end
end

Experiencing the same... lost a day trying to figure out if it was just me.