Problem z java.lang.IllegalArgumentException

Witam, da radę ktoś mi pomóc? 

[22:46:52 INFO]: [NeroCraft] Enabling NeroCraft v0.1
[22:46:52 INFO]: Wlaczony
[22:46:52 ERROR]: Error occurred while enabling NeroCraft v0.1 (Is it up to date?)
java.lang.IllegalArgumentException: Shapeless recipes cannot have more than 9 ingredients
        at org.apache.commons.lang.Validate.isTrue(Validate.java:136) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at org.bukkit.inventory.ShapelessRecipe.addIngredient(ShapelessRecipe.java:103) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at org.bukkit.inventory.ShapelessRecipe.addIngredient(ShapelessRecipe.java:89) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at me.neroos.crafting.Main.onEnable(Main.java:20) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) ~[spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:412) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugin(CraftServer.java:476) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.enablePlugins(CraftServer.java:394) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.MinecraftServer.n(MinecraftServer.java:360) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.MinecraftServer.g(MinecraftServer.java:334) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.MinecraftServer.a(MinecraftServer.java:290) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.DedicatedServer.init(DedicatedServer.java:210) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:458) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
        at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1.7.9-R0.2-207-g03373bb]
[22:46:52 INFO]: Server permissions file permissions.yml is empty, ignoring it
[22:46:52 INFO]: Done (1,787s)! For help, type "help" or "?"

package me.neroos.crafting;

import org.bukkit.Material;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.ShapelessRecipe;
import org.bukkit.inventory.meta.ItemMeta;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin{
	
	ItemStack is = new ItemStack(Material.STONE);{
		ItemMeta im = is.getItemMeta();
		im.setDisplayName("");
		is.setItemMeta(im);
	}
	
	public void onEnable() {
		System.out.println("Wlaczony");
		
		ShapelessRecipe sr = new ShapelessRecipe(is).addIngredient(64, Material.APPLE);
		
		ItemStack is = new ItemStack(Material.STONE);
		ItemMeta im = is.getItemMeta();
		im.setDisplayName("");
		is.setItemMeta(im);
		
		getServer().addRecipe(sr);
	}

}

Napisalem prosty crafting, ale wywala blad