Problems with Shared Objects - WIERD (or i'm just plain o'l stupid)

Using F8, AS2.0

What I am trying to do is to store an array inside of a slot in a Local
Shared Object.

(snippet from function)

// leaderboardShare is the Local Shared Object
// the variable scores is passed through this function
// if no array exists, create one
if (this.leaderboardShare.data[this.userId] == null) {
trace("{SharedLearning.setLeaderboardScore} no score data for this user
exists, creating scores array");
// create a new array to hold scores for this userId
var myScores = new Array();
myScores.push(score);
this.leaderboardShare.data[this.userId] = myScores;
// traces out the newly added score, (325)
trace("{SharedLearning.setLeaderboardScore} scores in userId array: " +
this.leaderboardShare.data[this.userId]);
} else {
trace("{SharedLearning.setLeaderboardScore} score data exists, adding
current score to array ");
// traces out existing data in userId slot (325)
trace("{SharedLearning.setLeaderboardScore} scores in userId array: " +
this.leaderboardShare.data[this.userId]);
// traces out Number
trace("score is type: " + typeof(score));
// temp array to hold data from existing LSO scores
var myScores:Array = this.leaderboardShare.data[this.userId];
// traces 325
trace("myScores (before): " + myScores);
// temp variable to hold latest score passed through (dont' really need
this)
var newScore:Number = score;
// add latest score to current score array
myScores.push(newScore);
// TRACES 325, NaN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
trace("myScores (after): " + myScores);
// overwrite existing scores array in LSO with new set of scores
this.leaderboardShare.data[this.userId] = myScores;
}

I know I can do this with any other object, what gives? why would the LSO
even care what i'm passing to it. Who cares that it's not a number, the
array doesn't care what you stick into it.

I'm truly confused.

Any help will help me drink less tonight after i'm finished ;)