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i was doing some stuff on my world and when i walked through the nether portal the world shut down and it said "A fatal error has occurred this connection is terminated" (the minecraft isnt closing, it just goes back to the menu) , i tried reentering but it didnt help. i have decided to copy and paste the importent part of the game output:

[23:41:11] [Client thread/ERROR] [FML]: Exception caught during firing event cpw.[email protected]22a9cdbc: java.lang.NullPointerException at jajo_11.ShadowWorld.Handlers.ExtendedPlayer.loadNBTData(ExtendedPlayer.java:91) ~[ExtendedPlayer.class:?] at jajo_11.ShadowWorld.Handlers.ShadowClientPacketHandler.onClientPacket(ShadowClientPacketHandler.java:165) ~[ShadowClientPacketHandler.class:?] at cpw.mods.fml.common.eventhandler.ASMEventHandler_487_ShadowClientPacketHandler_onClientPacket_ClientCustomPacketEvent.invoke(.dynamic) ~[?:?] at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) ~[ASMEventHandler.class:?] at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138) [EventBus.class:?] at cpw.mods.fml.common.network.FMLEventChannel.fireRead(FMLEventChannel.java:103) [FMLEventChannel.class:?] at cpw.mods.fml.common.network.NetworkEventFiringHandler.channelRead0(NetworkEventFiringHandler.java:30) [NetworkEventFiringHandler.class:?] at cpw.mods.fml.common.network.NetworkEventFiringHandler.channelRead0(NetworkEventFiringHandler.java:18) [NetworkEventFiringHandler.class:?] at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) [SimpleChannelInboundHandler.class:?] at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?] at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?] at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?] at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?] at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?] at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?] at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2049) [bao.class:?] at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:961) [bao.class:?] at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887) [bao.class:?] at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25] at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25] at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?] [23:41:11] [Client thread/ERROR] [FML]: Index: 1 Listeners: [23:41:11] [Client thread/ERROR] [FML]: 0: NORMAL [23:41:11] [Client thread/ERROR] [FML]: 1: ASM: [email protected] onClientPacket(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientCustomPacketEvent;)V [23:41:11] [Client thread/ERROR] [FML]: NetworkEventFiringHandler exception java.lang.NullPointerException at jajo_11.ShadowWorld.Handlers.ExtendedPlayer.loadNBTData(ExtendedPlayer.java:91) ~[ExtendedPlayer.class:?] at jajo_11.ShadowWorld.Handlers.ShadowClientPacketHandler.onClientPacket(ShadowClientPacketHandler.java:165) ~[ShadowClientPacketHandler.class:?] at cpw.mods.fml.common.eventhandler.ASMEventHandler_487_ShadowClientPacketHandler_onClientPacket_ClientCustomPacketEvent.invoke(.dynamic) ~[?:?] at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) ~[ASMEventHandler.class:?] at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138) ~[EventBus.class:?] at cpw.mods.fml.common.network.FMLEventChannel.fireRead(FMLEventChannel.java:103) ~[FMLEventChannel.class:?] at cpw.mods.fml.common.network.NetworkEventFiringHandler.channelRead0(NetworkEventFiringHandler.java:30) ~[NetworkEventFiringHandler.class:?] at cpw.mods.fml.common.network.NetworkEventFiringHandler.channelRead0(NetworkEventFiringHandler.java:18) ~[NetworkEventFiringHandler.class:?] at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?] at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?] at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?] at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?] at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?] at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?] at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?] at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2049) [bao.class:?] at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:961) [bao.class:?] at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887) [bao.class:?] at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25] at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25] at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?] [23:41:11] [Client thread/ERROR] [FML]: There was a critical exception handling a packet on channel SW|SyncEP java.lang.NullPointerException at jajo_11.ShadowWorld.Handlers.ExtendedPlayer.loadNBTData(ExtendedPlayer.java:91) ~[ExtendedPlayer.class:?] at jajo_11.ShadowWorld.Handlers.ShadowClientPacketHandler.onClientPacket(ShadowClientPacketHandler.java:165) ~[ShadowClientPacketHandler.class:?] at cpw.mods.fml.common.eventhandler.ASMEventHandler_487_ShadowClientPacketHandler_onClientPacket_ClientCustomPacketEvent.invoke(.dynamic) ~[?:?] at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) ~[ASMEventHandler.class:?] at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138) ~[EventBus.class:?] at cpw.mods.fml.common.network.FMLEventChannel.fireRead(FMLEventChannel.java:103) ~[FMLEventChannel.class:?] at cpw.mods.fml.common.network.NetworkEventFiringHandler.channelRead0(NetworkEventFiringHandler.java:30) ~[NetworkEventFiringHandler.class:?] at cpw.mods.fml.common.network.NetworkEventFiringHandler.channelRead0(NetworkEventFiringHandler.java:18) ~[NetworkEventFiringHandler.class:?] at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?] at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?] at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?] at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) ~[DefaultChannelPipeline.class:?] at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) ~[EmbeddedChannel.class:?] at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?] at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?] at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2049) [bao.class:?] at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:961) [bao.class:?] at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887) [bao.class:?] at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25] at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25] at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?] [23:41:11] [Client thread/INFO]: [CHAT] Damage Indicators v.3.2.3.0 is up to date.

please help, i had so much stuff on the world!!

(if anyone intrested to know, i had 3 stacks of diamonds and 3 nether stars)

please! someone, help! if it matters, i found this in this game out put:

[23:41:11] [Client thread/ERROR] [FML]: There was a critical exception handling a packet on channel SW|SyncEP
java.lang.NullPointerException

im pretty sure this means something because of the ERROR.

ok, deleting the mod is fixing the problem, but i really want to keep shadow world so is there any way to fix it without deleting it?