Hey, guys.

When I run this short script, I'm getting a NullReferenceException error. I have no idea why. The error points to this line in iTween:

if(tweenArguments.Contains("looktarget") && isRunning){

I know it's the "MoveBy" call, because the other part is working correctly--but no luck with the first bit.

Here's the script. Any ideas about what I'm doing wrong?

UPDATE: Tried using even a basic MoveBy iTween, and no luck. Is there something wrong with the way I'm calling it from the Start function?

private var moveTime;
private var moveDistance;
private var fadeTime;

function Start()
{
       moveTime = Random.Range(3,4);
       moveDistance = Random.Range(.1,.3);
       fadeTime = Random.Range(1,4);
       moveDown();
       fadeOut();
}

function moveDown()
{

    iTween.MoveBy(gameObject, {"amount" : Vector3(0,-1*moveDistance,0), "time": moveTime, "easetype" : "easeInOutQuad", "oncomplete" : "moveUp", "oncompletetarget" : gameObject});
}

function moveUp()
{
    iTween.MoveBy(gameObject, {"amount" : Vector3(0,moveDistance,0), "time": moveTime, "easetype" : "easeInOutQuad", "oncomplete" : "moveDown", "oncompletetarget" : gameObject});
}

function fadeOut()
{
    iTween.FadeTo(gameObject, {"alpha" : 0, "time": fadeTime, "easetype" : "easeInOutQuad", "oncomplete" : "fadeIn"});
}

function fadeIn()
{
    iTween.FadeTo(gameObject, {"alpha" : 1, "time": fadeTime, "easetype" : "easeInOutQuad", "oncomplete" : "fadeOut"});
}