Need help with FMS Developer

I have gone through Tom Green's helpful tutorials on streaming from the vod folder (FMS

Developer) and using his application to stream from the applications folder (FMIS).

http://www.adobe.com/devnet/flashmediaserver/articles/beginner_as3_fm3.html

I have FMS Developer on three systems, an XP Pro, Vista and Windows7.  The latter is an i7 64 bit with 8GB RAM running Adobe CS5 Production Suite.

Problem #1:  Following Tom Green's instructions on how to stream H.264 video from the vod folder using the following ActionScript code:

var nc:NetConnection = new NetConnection();
nc.connect("rtmp://localhost/vod");

var ns:NetStream = new NetStream(nc);

nc.onStatus = function(ncObj:Object) {
  trace(ncObj.code);
  if (ncObj.code == "NetConnection.Connect.Success") {
    ns.setBufferTime(2);
     myVideo.attachVideo(ns);
      ns.play("mp4:Vultures");
    }
};

I was able to stream the "Vultures" video on my XP computer, but NOT on my i7 64bit computer.  The "trace" worked on both, displaying "NetConnection.Connect.Success", but the video did not play and there is no buffering on the i7.  In both cases the video is in the vod folder.  On the i7 I have started Flash as Administrator and loaded the H264_StreamVOD.fla file provided.  Everything else is identical.  Why does the video play on my XP Pro 32-bit machine and not on the i7 64-bit.

I'm trying to work with a Flash webpage I created and have other problems working in the FMS environment, but I'll defer these issues for later.  For now, can anyone help me with Problem #1?  Appreciate your help.