The config file gets made but id's in the config dont register for the items.

	
public void initConfiguration(FMLInitializationEvent event){
	Configuration config = new Configuration(new File("config/MinespressoMod.cfg"));
	config.load();

	CoffeeID = config.get("Drinks", "Coffee", 1130).getInt();

	TeaID = config.get("Drinks", "Tea", 1131).getInt();

	HotChocolateID = config.get("Drinks", "HotChocolate", 1132).getInt();

	MinespressoID = config.get("Drinks", "Minespresso", 1133).getInt();

	CappuccinoID = config.get("Drinks", "Cappuccino", 1134).getInt();

	LatteID = config.get("Drinks", "Latte", 1135).getInt();


	SugaryHotChocolateID = config.get("Drinks", "SugaryHotChocolate", 1136).getInt();

	MagicMinespressoID = config.get("Drinks", "MagicMinespresso", 1137).getInt();

	SugaryMagicMinespressoID = config.get("Drinks", "SugaryMagicMinespresso", 1138).getInt();

	TheBombID = config.get("Drinks", "TheBomb", 1139).getInt();

	SleepyCoffeeID = config.get("Drinks", "SleepyCoffee", 1140).getInt();

	HealTeaID = config.get("Drinks", "HealTea", 1141).getInt();

	XPLatteID = config.get("Drinks", "XPLatte", 1142).getInt();

	StrengthCappuccinoID = config.get("Drinks", "StrengthCappuccino", 1143).getInt();

	MinespressoMachineID = config.get("Blocks", "DrinksMachine", 1144).getInt();

	CurrencyItemID = config.get("Currency", "Currency", 265).getInt();


	config.save();
}





// Register Regular Drinks
	public static Item Coffee = new ItemDrink(1111, 4, 4, false).setUnlocalizedName("Coffee");
	public static Item Tea = new ItemDrink(TeaID, 6, 6, false).setUnlocalizedName("Tea");
	public static Item HotChocolate = new ItemDrink(HotChocolateID, 3, 3, false).setUnlocalizedName("HotChocolate");
	public static Item Minespresso = new ItemDrink(MinespressoID, 10, 10, false).setUnlocalizedName("Minespresso");
	public static Item Cappuccino = new ItemDrink(CappuccinoID, 6, 6, false).setUnlocalizedName("Cappuccino");
	public static Item Latte = new ItemDrink(LatteID, 5, 5, false).setUnlocalizedName("Latte");

	//Register HotChocolate Drinks
	public static Item SugaryHotChocolate = new ItemSugaryDrink(SugaryHotChocolateID, 3, 3, false).setUnlocalizedName("SugaryHotChocolate");

	//Register Minespresso Drinks
	public static Item MagicMinespresso = new ItemMagicDrink(MagicMinespressoID, 3, 3, false).setUnlocalizedName("MagicMinespresso");
	public static Item SugaryMagicMinespresso = new ItemSugaryMagicDrink(SugaryMagicMinespressoID, 3, 3, false).setUnlocalizedName("SugaryMagicMinespresso");
	public static Item TheBombMinespresso = new TheBombItem(TheBombID, 14, 14, false).setUnlocalizedName("TheBombMinespresso");

	//Register Coffee Drinks
	public static Item SleepyCoffee = new ItemSleepyDrink(SleepyCoffeeID, 3, 3, false).setUnlocalizedName("SleepyCoffee");

	//Register Tea Drinks
	public static Item HealTea = new ItemHealDrink(HealTeaID, 6, 6, false).setUnlocalizedName("HealTea");

	//Latte
	public static Item XPLatte = new ItemXPDrink(XPLatteID, 5, 5, false).setUnlocalizedName("XPLatte");

	//Cappuccino 
	public static Item StrengthCappuccino = new ItemStrength(StrengthCappuccinoID, 6, 6, false).setUnlocalizedName("StrengthCappuccino");

	// Register Blocks
	public static Block DrinksMachine = new BlockDrinksMachine(1161, Material.iron).setUnlocalizedName("DrinksMachine").setHardness(3.5F);

	@EventHandler
	public void load(FMLInitializationEvent event){
		this.initConfiguration(event);
	}

You don't need to worry about Item or BlockIDs anymore. They are assigned automatically for you.

Oh, thanks