I am working on a projectile manager for my 2D space shooter iPhone game. And im trying at the start off the level make a array with all the ProjectileController script that is attached to the projectile gameobjects. But i get a NullReferenceException error on the line in the second for loop. How can i make this function work? Or is there a better way of achiving what im trying to do?

private var maxNumProjectiles : int = 100;
private var projectilesArray : ProjectileController[];

function InitializeProjectiles() // Initializes all the projectiles and adds their ProjectileController script to the projectilesArray
{
    for(i=0; i<maxNumProjectiles; i++)
    {
        var clone : GameObject;
        clone = Instantiate(projectilePrefab, projectileIntPosition, Quaternion.identity);
    }



var tempArray : GameObject[] = GameObject.FindGameObjectsWithTag("Projectile");



for(i=0; i<maxNumProjectiles; i++)
    {
        projectilesArray[i] = tempArray[i].GetComponent("ProjectileController");
    }
}