load forge try 2

// this is the forge implementation for loading coremods
private static Method ADDURL;

// the following takes place inside the injectIntoClassLoader(LaunchClassLoader classLoader) method
if(ADDURL == null) {
	ADDURL = URLClassLoader.class.getDeclaredMethod("addURL", URL.class);
	ADDURL.setAccessible(true);
}
ADDURL.invoke(classLoader.getClass().getClassLoader(), forgeLib.toURI().toURL());
classLoader.addURL(forgeLib.toURI().toURL());

// here I just grab the tweaker instance as per usual
forgeTweaker = ((ITweaker) Class.forName("cpw.mods.fml.common.launcher.FMLTweaker", false, classLoader).newInstance());

Logger.log("Starting Forge!");

// I call the tweaker like this for cleaner console output,
// it's effectively the same, I have tried both ways
forgeTweaker.acceptOptions(args, gameDir, assetsDir, profile);
forgeTweaker.injectIntoClassLoader(classLoader);