weapon case loot

[07:36:22] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_101]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_101]
	at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1045) [bcx.class:?]
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:371) [bcx.class:?]
	at net.minecraft.client.main.Main.main(SourceFile:124) [Main.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
	at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:310) [NewLaunch.jar:?]
	at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:395) [NewLaunch.jar:?]
	at org.multimc.EntryPoint.listen(EntryPoint.java:170) [NewLaunch.jar:?]
	at org.multimc.EntryPoint.main(EntryPoint.java:54) [NewLaunch.jar:?]
Caused by: java.lang.NullPointerException
	at net.minecraft.client.audio.PositionedSoundRecord.<init>(SourceFile:30) ~[bzc.class:?]
	at net.minecraft.client.audio.PositionedSoundRecord.<init>(SourceFile:26) ~[bzc.class:?]
	at net.minecraft.client.multiplayer.WorldClient.func_184134_a(WorldClient.java:544) ~[bln.class:?]
	at net.minecraft.client.multiplayer.WorldClient.func_184148_a(WorldClient.java:532) ~[bln.class:?]
	at net.minecraft.client.network.NetHandlerPlayClient.func_184327_a(NetHandlerPlayClient.java:1549) ~[bll.class:?]
	at net.minecraft.network.play.server.SPacketSoundEffect.func_148833_a(SourceFile:90) ~[ic.class:?]
	at net.minecraft.network.play.server.SPacketSoundEffect.func_148833_a(SourceFile:12) ~[ic.class:?]
	at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[fl$1.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_101]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_101]
	at net.minecraft.util.Util.func_181617_a(SourceFile:45) ~[h.class:?]
	... 17 more