java.lang.NullPointerException: Updating screen events

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java.lang.NullPointerException: Updating screen events
at com.raizunne.redstonic.Item.IRecipes.HotswapSet.item(HotswapSet.java:35)
at com.raizunne.redstonic.Item.IRecipes.HotswapSet.func_77569_a(HotswapSet.java:23)
at net.minecraft.item.crafting.CraftingManager.func_82787_a(CraftingManager.java:323)
at tconstruct.tools.inventory.CraftingStationContainer.func_75130_a(CraftingStationContainer.java:114)
at tconstruct.tools.inventory.InventoryCraftingStation.func_70299_a(InventoryCraftingStation.java:121)
at net.minecraft.inventory.Slot.func_75215_d(Slot.java:77)
at codechicken.nei.guihook.GuiContainerManager.handleSlotClick(GuiContainerManager.java:504)
at codechicken.nei.FastTransferManager.clickSlot(FastTransferManager.java:283)
at codechicken.nei.FastTransferManager.clickSlot(FastTransferManager.java:279)
at codechicken.nei.recipe.DefaultOverlayHandler.moveIngredients(DefaultOverlayHandler.java:122)
at codechicken.nei.recipe.DefaultOverlayHandler.overlayRecipe(DefaultOverlayHandler.java:76)
at tconstruct.plugins.nei.CraftingStationOverlayHandler.overlayRecipe(CraftingStationOverlayHandler.java:29)
at codechicken.nei.recipe.GuiRecipe.overlayRecipe(GuiRecipe.java:193)
at codechicken.nei.recipe.GuiRecipe.func_146284_a(GuiRecipe.java:122)
at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)
at codechicken.nei.recipe.GuiRecipe.func_73864_a(GuiRecipe.java:102)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:296)
at net.minecraft.client.gui.inventory.GuiContainer.func_146274_d(GuiContainer.java)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1640)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
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:483)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

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Once, 3 months ago
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Once, 3 months ago

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