ExternalInterface.available returns true
ExternalInterface.addCallBack returns false
website work, I instead I used SetVariable and played the Flash
movie. This techinque works on computers that returned true to both
of the above ExternalInterface functions, but doesn't work on
computers where addCallBack fails.
Inside of Flash in ActionScript, Command is undefined.
This occurs on both IE and Firefox, so appears to be an OS
setting of some kind.