java.lang.NullPointerException: Updating screen events
	at net.minecraft.item.ItemMap.func_77873_a(ItemMap.java:64)
	at net.minecraft.item.crafting.RecipesMapExtending.func_77569_a(SourceFile:41)
	at net.minecraft.item.crafting.CraftingManager.func_82787_a(CraftingManager.java:199)
	at com.raoulvdberge.refinedstorageaddons.item.WirelessCraftingGrid.onCraftingMatrixChanged(WirelessCraftingGrid.java:67)
	at com.raoulvdberge.refinedstorageaddons.item.WirelessCraftingGrid$1.func_75130_a(WirelessCraftingGrid.java:29)
	at net.minecraft.inventory.InventoryCrafting.func_70299_a(SourceFile:93)
	at net.minecraft.inventory.Slot.func_75215_d(Slot.java:70)
	at net.minecraft.inventory.Container.func_184996_a(Container.java:195)
	at com.raoulvdberge.refinedstorage.container.ContainerBase.func_184996_a(ContainerBase.java:118)
	at net.minecraft.client.multiplayer.PlayerControllerMP.func_187098_a(PlayerControllerMP.java:566)
	at net.minecraft.client.gui.inventory.GuiContainer.func_184098_a(GuiContainer.java:638)
	at net.minecraft.client.gui.inventory.GuiContainer.func_146286_b(GuiContainer.java:587)
	at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:543)
	at com.raoulvdberge.refinedstorage.gui.GuiBase.func_146274_d(GuiBase.java:186)
	at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:501)
	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1757)
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1096)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:397)
	at net.minecraft.client.main.Main.main(SourceFile:123)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)