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java.lang.NullPointerException: Updating screen events	at mrtska.item.AbstractItem.func_77653_i(AbstractItem.java:155)	at net.minecraft.item.ItemStack.func_82833_r(ItemStack.java:427)	at buildcraft.core.proxy.CoreProxyClient.getItemDisplayName(CoreProxyClient.java:83)	at buildcraft.transport.ItemFacade.getFacadeStateDisplayName(ItemFacade.java:184)	at buildcraft.transport.ItemFacade.func_77653_i(ItemFacade.java:143)	at net.minecraft.item.ItemStack.func_82833_r(ItemStack.java:427)	at littleMaidMobX.LMM_ContainerTriggerSelect$1.compare(LMM_ContainerTriggerSelect.java:80)	at littleMaidMobX.LMM_ContainerTriggerSelect$1.compare(LMM_ContainerTriggerSelect.java:64)	at java.util.TimSort.countRunAndMakeAscending(Unknown Source)	at java.util.TimSort.sort(Unknown Source)	at java.util.Arrays.sort(Unknown Source)	at java.util.ArrayList.sort(Unknown Source)	at java.util.Collections.sort(Unknown Source)	at littleMaidMobX.LMM_ContainerTriggerSelect.initAllSelections(LMM_ContainerTriggerSelect.java:87)	at littleMaidMobX.LMM_ContainerTriggerSelect.(LMM_ContainerTriggerSelect.java:44)	at littleMaidMobX.LMM_GuiTriggerSelect.(LMM_GuiTriggerSelect.java:39)	at littleMaidMobX.LMM_GuiIFF.func_146284_a(LMM_GuiIFF.java:92)	at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)	at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:296)	at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1629)	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:962)	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887)	at net.minecraft.client.main.Main.main(SourceFile:148)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)