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java.lang.NullPointerException: 	at mixac1.dangerrpg.capability.data.RPGDataRegister.extractTransferData(RPGDataRegister.java:72)	at mixac1.dangerrpg.network.MsgSyncConfig.fromBytes(MsgSyncConfig.java:20)	at cpw.mods.fml.common.network.simpleimpl.SimpleIndexedCodec.decodeInto(SimpleIndexedCodec.java:17)	at cpw.mods.fml.common.network.simpleimpl.SimpleIndexedCodec.decodeInto(SimpleIndexedCodec.java:7)	at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:77)	at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:17)	at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81)	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89)	at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)	at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337)	at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323)	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785)	at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169)	at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77)	at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)	at net.minecraft.client.Minecraft.func_71407_l(Unknown Source)	at net.minecraft.client.Minecraft.func_71411_J(Unknown Source)	at net.minecraft.client.Minecraft.func_99999_d(Unknown Source)	at net.minecraft.client.main.Main.main(SourceFile:148)	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)	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 org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:310)	at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:395)	at org.multimc.EntryPoint.listen(EntryPoint.java:170)	at org.multimc.EntryPoint.main(EntryPoint.java:54)