See AS3 onBWDone error Flash Media Server with Amazon CloudFront for reference.

The error:

Error #1069: _netConnection.client = new NetConnectionClient;

package com.skinnygeek.media.video {
	import com.skinnygeek.logging.Logger;

	/**
	 * <code>NetConnectionClient</code> added
	 * to solve Error #1069.
	 *
	 *	@langversion ActionScript 3.0
	 *	@Flash 		 Player 9.0.28.0
	 *	@author 	 Goliat One
	 *	@url		 http://www.enjoy-mondays.com
	 *  @version 	 1.0
	 */
	public class NetConnectionClient {

		private var _logger:Logger = Logger.instance( NetConnectionClient );

		/**
		 * <code>NetConnectionClient</code>
		 * com.skinnygeek.media.video.NetConnectionClient
		 */
		public function NetConnectionClient() {}

		/**
		 *
		 * @param	...rest
		 * @return
		 */
		public function onBWCheck(...rest):Number {
            return 0;
        }

		/**
		 *
		 * @param	...rest
		 */
        public function onBWDone(...rest):void {
            var p_bw:Number;
            if (rest.length > 0){
                p_bw = rest[0];
            }
            _logger.warn("bandwidth = " + p_bw + " Kbps.");
        }
	}
}

Also, 1069 stands for onMetaData in flash.net.NetStream.

package com.skinnygeek.media.video {

	import com.skinnygeek.media.video.events.CuePointEvent;
	import com.skinnygeek.media.video.events.MetadataEvent;
	import com.skinnygeek.media.video.events.VideoPlayerEvent;
	import com.skinnygeek.media.video.Metadata;
	import flash.events.EventDispatcher;

	/**
	 * <code>NetStreamClient</code>.
	 *
	 *	@langversion ActionScript 3.0
	 *	@Flash 		 Player 9.0.28.0
	 *	@author 	 Goliat One
	 *	@url		 http://www.enjoy-mondays.com
	 *  @version 	 1.0
	 */
	public class NetStreamClient extends EventDispatcher {

		/**
		 * <code>NetStreamClient</code>
		 * com.skinnygeek.media.video.NetStreamClient
		 */
		public function NetStreamClient() {}

		/**
		 *
		 * @param	data
		 */
		public function onMetaData ( data:Object ):void {
			var metadata:Metadata = new Metadata( data );
			dispatchEvent( new MetadataEvent( MetadataEvent.ON_METADATA, metadata ) );
		}

		/**
		 *
		 * @param	data
		 */
		public function onCuePoint ( data:Object ):void {
			var e:CuePointEvent = new CuePointEvent( VideoPlayerEvent.CUEPOINT, null, data );
			dispatchEvent( e );
		}
	}
}