I have the following which produces a trace if the user does not type an email address when testing locally, but nothing when testing outside of Flash.
//handle onValidation
myForm.onValidate = function(infoObj:Object):Void {
if (infoObj.success) {
trace("Form is Valid for Submission");
//this line actually submits the form
this.submitForm(2);
gotoAndStop("success");
} else {
trace("Validation Failed. Please check your input");
}
};