java.lang.NullPointerException: Unexpected error

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java.lang.NullPointerException: Unexpected error
at cofh.lib.util.helpers.BlockHelper.createStackedBlock(BlockHelper.java:565)
at cofh.lib.util.helpers.BlockHelper.breakBlock(BlockHelper.java:540)
at com.firelizzard.firecraft.item.DestroyerTool.func_77648_a(DestroyerTool.java:492)
at net.minecraft.client.multiplayer.PlayerControllerMP.func_78760_a(PlayerControllerMP.java:360)
at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1447)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1953)
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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