Creating new c++ class

Hello,

I am trying to create a new class in C++ and call it from TorqueScript, but I'm having some problems.

First, my C++ .h/.cc file looks like:
ObjectManager.h

#ifndef _OBJECTMANAGER_H_
#define _OBJECTMANAGER_H_

#ifndef _CONSOLEOBJECT_H_
#include "console/consoleObject.h"
#endif

class ObjectManager : public ConsoleObject
{
public:
	typedef ConsoleObject Parent;

	ObjectManager();

	DECLARE_CONOBJECT(ObjectManager);
};

#endif

ObjectManager.cc:

#include "console/console.h"
#include "game/objectManager.h"

IMPLEMENT_CONOBJECT(ObjectManager);

ObjectManager::ObjectManager(){
	Con::errorf("ObjectManager");
}

I tried calling it in script with:

$objectManager = new ObjectManager(){};

But I am getting the error:
Unable to instantiate non-conobject class ObjectManager.

I thought that if I had the IMPLEMENT/DECLARE macros that would fix it, but no luck.

What else do I have to do to create a new class?

Thanks,
Justin