EndLevel() crashes T2D?

I've been putting together a PoC ("Proof of Concept", but usually "Piece of Crap" also, when I'm at the helm!) with the demo to see if I can do the basics of what I need to do with the TGB. Other than a small gap in the tutorials when it comes to sprites colliding with tilemap layers, it has been an absolute dream come true; a truly wonderful system.

There's just one major issue I can't seem to find a solution to. I can see that there are some forum posts about the issue, but they are inaccessible to me because I haven't purchased TGB yet. The issue is something that is so fundamental to games, that I feel like I must be missing something.

How do I change levels in a game?

I looked through the tutorials, but I only found something on creating a splash screen. I looked through the game.cs and main.cs files, and the logical answer seemed to be: use endGame() followed by startGame("~/path/to/new/level.file"). Or perhaps, call sceneWindow2D.endLevel() and sceneWindow2D.loadLevel(), but when I try to call any of these functions, TGB crashes. There are no error messages other than the generic Windows message: "TGB.exe gas encountered a problem and needs to close".

I've tried calling these methods via schedule, in case TGB wasn't happy with ending the level at that exact moment in the execution, but I get the same result. The related code is below:

function EPlayer::onCollision(%srcObj, %dstObj, %srcRef,%dstRef, %time, %normal, %contactCount, %contacts)
{
	if ($ThePlayer.gamePaused)
	{
		return;
	}
	if (%dstObj.isTrigger && %dstObj.triggerType $= "levelSuccess")
	{
		$ThePlayer.gamePaused = true;
		echo("LOADING NEW LEVEL");
		endGame();
//		startGame("~/data/levels/poc_dungeon02.t2d");
	}
}

So, my question is, is there some other way of changing levels in TGB? Am I going about it all wrong?

I should note, the collision method works fine for other things, so the event isn't the cause of the crash. If I comment out the endGame(); line and replace it with something like updating the player sprite's frame, it works just fine.

Thanks.