1119 Error help undefined property

Question

Here is my code:
var gameSounds:Sound = new Sound(new URLRequest("inGame.mp3"));
gameSounds.play();
var gunShotSound:Sound = new Sound(new URLRequest("gunshot.mp3"));
import flash.events.MouseEvent;
import flash.display.MovieClip;
import flash.geom.Point;
stop();
gunBarrel.addEventListener(Event.ENTER_FRAME,  gunEnterFrame);
function gunEnterFrame(pEvt) {
    var mc = pEvt.currentTarget;
    var angleRadian = Math.atan2(mouseY - mc.y,mouseX - mc.x);
    var angleDegree = angleRadian * 180 / Math.PI;
    mc.rotation = angleDegree;
Mouse.hide();
main_crosshair.startDrag(true);
main_crosshair.addEventListener(MouseEvent.MOUSE_DOWN, crosshairFX);
function crosshairFX (e:MouseEvent):void{
          gunShotSound.play();
          var projectile:bullet = new bullet();
//projectile.x = parent.mouseX;
//          projectile.y = parent.mouseY;
          projectile.x = gunBarrel.x;
    projectile.y = gunBarrel.y;
    // Save the randian angle between the mouse and the tank
    // This angle will set the direction of the bullet
    projectile.angleRadian = Math.atan2(mouseY - gunBarrel.y, mouseX - gunBarrel.x);
    // Add an enter frame event on each bullet
    projectile.addEventListener(Event.ENTER_FRAME, bulletEnterFrame);
          addChild(projectile);
          main_crosshair.gotoAndPlay(3);
// Velocity of each bullet
var speed = 8;
function bulletEnterFrame(pEvent) {
    // Get the current object (Bullet)
    var p = pEvent.currentTarget;
    // Move this bullet on each frames
    // On X axis use the cosinus angle
    p.x +=  Math.cos(p.angleRadian) * speed;
    // On Y axis use the sinus angle
    p.y +=  Math.sin(p.angleRadian) * speed;
    // Orient the bullet to the direction
    p.rotation = p.angleRadian * 180 / Math.PI;
    // You have to remove each created bullet
    // So after every moves you must check bullet position
    // If the bullet is out of the screen
    if (p.x < 0 || p.x > 400 || p.y < 0 || p.y > 400) {
        // Remove it from the display list
        removeChild(p);
        // /!\ AND REOMOVE HIS EVENT LISTER
        p.removeEventListener(Event.ENTER_FRAME, bulletEnterFrame);
When I try to run it though I get "1119: Access of possibly undefined property angleRadian through a reference with static type bullet."
What's wrong with my code?

Answer 1

cast p as a MovieClip and retest.  if that fails, click file/publish settings/swf, tick "permit debugging" and retest to see the line number with the problematic code.
function bulletEnterFrame(pEvent) {
    // Get the current object (Bullet)
    var p = MovieClip(pEvent.currentTarget);