java.lang.NullPointerException: Unexpected error
	at net.minecraft.client.gui.recipebook.GuiRecipeBook.func_191878_b(GuiRecipeBook.java:142)
	at com.feed_the_beast.ftbl.client.FTBLibClientEventHandler$ButtonInvLMRenderer.updateButtonPositions(FTBLibClientEventHandler.java:216)
	at com.feed_the_beast.ftbl.client.FTBLibClientEventHandler.guiInitEvent(FTBLibClientEventHandler.java:129)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_21_FTBLibClientEventHandler_guiInitEvent_Post.invoke(.dynamic)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179)
	at net.minecraft.client.gui.GuiScreen.setWorldAndResolution(GuiScreen.java:538)
	at zed.artisanstabs.menu.EventMenuOpened.onGuiOpen(EventMenuOpened.java:48)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_8_EventMenuOpened_onGuiOpen_GuiOpenEvent.invoke(.dynamic)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179)
	at net.minecraft.client.Minecraft.displayGuiScreen(Minecraft.java:1031)
	at net.minecraft.client.gui.inventory.GuiInventory.initGui(GuiInventory.java:64)
	at net.minecraft.client.gui.GuiScreen.setWorldAndResolution(GuiScreen.java:536)
	at net.minecraft.client.Minecraft.displayGuiScreen(Minecraft.java:1065)
	at net.minecraft.client.Minecraft.processKeyBinds(Minecraft.java:2262)
	at net.minecraft.client.Minecraft.runTickKeyboard(Minecraft.java:2107)
	at net.minecraft.client.Minecraft.runTick(Minecraft.java:1894)
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1155)
	at net.minecraft.client.Minecraft.run(Minecraft.java:431)
	at net.minecraft.client.main.Main.main(Main.java:118)
	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)
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
	at GradleStart.main(GradleStart.java:26)
	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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)