[TweenMax into Electron]

I had this same issue and was able to resolve it by commenting some code out. As 

todotoit mentioned above it seems to be related to using plugins, I was using Draggable. To resolve I made a copy of Draggable and commented out the very last function (export to AMD/RequireJS and CommonJS/Node) - starting at line 2291. you can see in that code there is some requires which i think Electron is confused about the file structure... removing this did the trick for me and was able to run the project finally:

 

//export to AMD/RequireJS and CommonJS/Node (precursor to full modular build system coming at a later date)

// (function(name) {

// 	"use strict";

// 	var getGlobal = function() {

// 		return (_gsScope.GreenSockGlobals || _gsScope)[name];

// 	};

// 	if (typeof(define) === "function" && define.amd) { //AMD

// 		define(["TweenLite", "CSSPlugin"], getGlobal);

// 	} else if (typeof(module) !== "undefined" && module.exports) { //node

// 		require("../TweenLite.js");

// 		require("../plugins/CSSPlugin.js");

// 		module.exports = getGlobal();

// 	}

// }("Draggable"));