Have triggers been changed? Can't get t3D to recognise trigger

I have a check point trigger in t3d.

In "scripts/server/race/" I have checkpoint.cs.
It is inited in scriptExec.cs in "scripts/server/" like this:

// Load up all scripts.  This function is called when
// a server is constructed.
exec("./camera.cs");
exec("./triggers.cs");
exec("./inventory.cs");
exec("./shapeBase.cs");
exec("./item.cs");
exec("./health.cs");
exec("./projectile.cs");
exec("./radiusDamage.cs");

// Load our racing scripts
exec("./race/checkpoint.cs"); // <--- My script

I originally had it at the bottom of the page, but moved it to see if it would work here. I'm getting the following in the console:

Mapping string: toggleVehicleMap to index: 17
scripts/server/race/checkpoint.cs (18): Unknown command onEnterTrigger.

This script works in both tge and tgea without problems. This onEnterTrigger is the default used in triggers.cs.

//-----------------------------------------------------------------------------
// Torque Game Engine
// Copyright (C) GarageGames.com, Inc.
//-----------------------------------------------------------------------------

datablock TriggerData(CheckPointTrigger)
{
   // The period is value is used to control how often the console
   // onTriggerTick callback is called while there are any objects
   // in the trigger.  The default value is 100 MS.
   tickPeriodMS = 100;
};

//-----------------------------------------------------------------------------

function CheckPointTrigger::onEnterTrigger(%this,%trigger,%obj) // //<-- Error Here

{
	Parent::onEnterTrigger(%this,%trigger,%obj); 
	if(%obj.client.nextCheck == %trigger.checkpoint)
	{
		if(%trigger.isLast)
		{
			// Player has completed a lap.
			%obj.client.lap++;

			if(%obj.client.lap >= $Game::Laps)
			{
				// Increase his score by 1.
				%obj.client.incScore(1);
            	// End the game
             	cycleGame();			
			}
			else {
				%obj.client.nextCheck = 0;  //changed from 1 to test and it works
				commandToClient(%obj.client, 'IncreaseLapCounter');
			}
		}
		else {
			// Continue to the next one.
			%obj.client.nextCheck++;
		}
	}
	else
		centerPrint(%obj.client, "Wrong Checkpoint!", 1, 1);
}

That's the entire script. Does anyone have any idea why this won't work?