Changing Scene Data (Levels)

I'm a newb in Torque, but a c# developer.

I'm having trouble unloading 1 scene and loading another. Both scenes work fine when loading from the "BeginRun" method. But I'm trying to start one scene (level) when something happens in the first.

I've tried both of the following:

protected override void BeginRun()
{
base.BeginRun();
SceneLoader.Load(@"data\levels\mainMenu.txscene");
this._state = GameState.MainMenu;
}

//Method get run when you click a button on the "mainMenu" scene.
public void StartGame()
{
SceneLoader.Unload(@"data\levels\mainMenu.txscene");
//I've also tried the following
SceneLoader.UnloadLast();
SceneLoader.Load(@"data\levels\level1.txscene");
}

I've also tried assigning a variable to the Scene Data and using the methods to unload and load a new scene.

Each time I run the game my screen goes black. I've also tried to not unload and I get the second scene overlayed on top of the first.