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java.lang.NullPointerException: Unexpected error	at net.minecraft.client.audio.PositionedSoundRecord.(SourceFile:30)	at net.minecraft.client.audio.PositionedSoundRecord.(SourceFile:26)	at net.minecraft.client.multiplayer.WorldClient.func_184134_a(WorldClient.java:544)	at net.minecraft.client.multiplayer.WorldClient.func_184148_a(WorldClient.java:532)	at net.minecraft.world.World.func_184133_a(World.java:1045)	at net.minecraft.item.ItemBlock.func_180614_a(ItemBlock.java:57)	at com.lothrazar.cyclicmagic.item.itemblock.ItemBlockScaffolding.func_180614_a(ItemBlockScaffolding.java:81)	at net.minecraft.item.ItemStack.func_179546_a(ItemStack.java:145)	at net.minecraft.client.multiplayer.PlayerControllerMP.func_187099_a(PlayerControllerMP.java:463)	at PlayerControllerOF.func_187099_a(PlayerControllerOF.java:88)	at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1518)	at net.minecraft.client.Minecraft.func_184117_aA(Minecraft.java:2184)	at net.minecraft.client.Minecraft.func_184118_az(Minecraft.java:1961)	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1749)	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1055)	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:371)	at net.minecraft.client.main.Main.main(SourceFile:124)	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)	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)