This occasionally happens when I try to scoop lava with Ender Io installed
java.lang.NullPointerException: Unexpected error
at crazypants.enderio.fluid.BucketHandler.getFilledBucket(BucketHandler.java:49)
at crazypants.enderio.fluid.BucketHandler.onBucketFill(BucketHandler.java:40)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_177_BucketHandler_onBucketFill_FillBucketEvent.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:49)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:140)
at net.minecraftforge.event.ForgeEventFactory.onBucketUse(ForgeEventFactory.java:300)
at net.minecraft.item.ItemBucket.func_77659_a(ItemBucket.java:40)
at net.minecraft.item.ItemStack.func_77957_a(ItemStack.java:160)
at net.minecraft.client.multiplayer.PlayerControllerMP.func_187101_a(PlayerControllerMP.java:484)
at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1541)
at net.minecraft.client.Minecraft.func_184117_aA(Minecraft.java:2174)
at net.minecraft.client.Minecraft.func_184118_az(Minecraft.java:1958)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1746)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1054)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:369)
at net.minecraft.client.main.Main.main(SourceFile:124)
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)