Undefined object being passed via Requirejs

I'm using Requirejs to load the JavaScript in our web app. The issues is that I'm getting an undefined object being passed to a module which, when used in other modules, is instantiated perfectly fine.

OK, here's the setup. My main.js file which requirejs runs on startup:

require.config({
    baseUrl: "/scripts",
    paths: {
        demographics: "Demographics/demographics",
        complaints: "Complaints/complaints",
    }
});

require(["templates", "demographics", "complaints", "crossDomain"], function (templates, demographics, complaints) {
    "use strict";

    console.log("0");
    console.log(demographics === undefined);

    demographics.View.display();
});

A lot of the config has been stripped to just the core files in this problem.

Here's Demographics.js:

define(["ko", "templates", "complaints", "globals", "underscore"], function (ko, templates, complaints, globals) {

    // Stuff removed.
    return {
        View: view
    };
});

and Complaints.js

define([
    "demographics",
    "ko",
    "templates",
    "complaints",
    "visualeffects",
    "globals",
    "webservice",
    "underscore",
    "typewatcher",
    "imagesloaded"],
    function (demographics, ko, templates, complaints, visualeffects, globals, webservice) {
        "use strict";


        console.log("1");
        console.log(demographics === undefined);
    return {
        View: view
    };
});

The problem is this - in Complaints.js the demographics parameter passed via the define config is undefined. The console log out tells me that "demographics === undefined" is true.

However, when the main.js file executes, the demographics parameter passed to it is not undefined, it is, as expected, an instantiated object.

Now I'm stuck since I can't see why in complaints.js that demographics variable is undefined. Can anyone spot what I'm missing please?