Это, похоже, работает. В любом случае, спасибо.
import flash.events.SecurityErrorEvent;
loader.contentLoaderInfo.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
loader.contentLoaderInfo.addEventListener(SecurityErrorEvent.SECURITY_ERROR, SecurityErrorEventExample);
function SecurityErrorEventExample() {
var loader: URLLoader = new URLLoader();
loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
var request: URLRequest = new URLRequest("http://www.perdanadesigns.com");
loader.load(request);
}
function securityErrorHandler(event: SecurityErrorEvent): void {
trace("securityErrorHandler: " + event);
}