Posted March 15, 201411 yr I am using an slightly earlier version of Forge on my server (1024) than on my client (1029). I built my mod (using gradlew build) and it completed with no errors. I have no netty code in my mod. It was dropped in my server and client mod folders. The server started and ran fine and my mod was actively there (log messages). The client started and ran fine (standalone and integrated). However, the error occurs when I connect to my local server. The server believes the connection is going fine until the client disconnects - it says I joined game and then lost connection. The client log says something else entirely: [06:38:19 INFO]: Client> [06:38:19] [Client thread/ERROR] [FML]: FMLIndexedMessageCodec exception caught [06:38:19 INFO]: Client> io.netty.handler.codec.DecoderException: java.lang.NullPointerException: Undefined message for discriminator 2 in channel FORGE [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:99) ~[MessageToMessageDecoder.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?] [06:38:19 INFO]: Client> at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:71) [FMLProxyPacket.class:?] [06:38:19 INFO]: Client> at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:198) [ef.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.multiplayer.GuiConnecting.func_73876_c(SourceFile:76) [bbe.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1645) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:952) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:869) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.main.Main.main(SourceFile:103) [Main.class:?] [06:38:19 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?] [06:38:19 INFO]: Client> at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?] [06:38:19 INFO]: Client> Caused by: java.lang.NullPointerException: Undefined message for discriminator 2 in channel FORGE [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:71) ~[FMLIndexedMessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:16) ~[FMLIndexedMessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89) ~[MessageToMessageDecoder.class:?] [06:38:19 INFO]: Client> ... 18 more [06:38:19 INFO]: Client> [06:38:19] [Client thread/ERROR] [FML]: FluidIdRegistryMessageHandler exception [06:38:19 INFO]: Client> io.netty.handler.codec.DecoderException: java.lang.NullPointerException: Undefined message for discriminator 2 in channel FORGE [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:99) ~[MessageToMessageDecoder.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?] [06:38:19 INFO]: Client> at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:71) [FMLProxyPacket.class:?] [06:38:19 INFO]: Client> at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:198) [ef.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.multiplayer.GuiConnecting.func_73876_c(SourceFile:76) [bbe.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1645) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:952) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:869) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.main.Main.main(SourceFile:103) [Main.class:?] [06:38:19 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?] [06:38:19 INFO]: Client> at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?] [06:38:19 INFO]: Client> Caused by: java.lang.NullPointerException: Undefined message for discriminator 2 in channel FORGE [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:71) ~[FMLIndexedMessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:16) ~[FMLIndexedMessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89) ~[MessageToMessageDecoder.class:?] [06:38:19 INFO]: Client> ... 18 more [06:38:19 INFO]: Client> [06:38:19] [Client thread/ERROR] [FML]: DimensionMessageHandler exception [06:38:19 INFO]: Client> io.netty.handler.codec.DecoderException: java.lang.NullPointerException: Undefined message for discriminator 2 in channel FORGE [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:99) ~[MessageToMessageDecoder.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?] [06:38:19 INFO]: Client> at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:71) [FMLProxyPacket.class:?] [06:38:19 INFO]: Client> at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:198) [ef.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.multiplayer.GuiConnecting.func_73876_c(SourceFile:76) [bbe.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1645) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:952) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:869) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.main.Main.main(SourceFile:103) [Main.class:?] [06:38:19 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?] [06:38:19 INFO]: Client> at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?] [06:38:19 INFO]: Client> Caused by: java.lang.NullPointerException: Undefined message for discriminator 2 in channel FORGE [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:71) ~[FMLIndexedMessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:16) ~[FMLIndexedMessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89) ~[MessageToMessageDecoder.class:?] [06:38:19 INFO]: Client> ... 18 more [06:38:19 INFO]: Client> [06:38:19] [Client thread/ERROR] [FML]: HandshakeCompletionHandler exception [06:38:19 INFO]: Client> io.netty.handler.codec.DecoderException: java.lang.NullPointerException: Undefined message for discriminator 2 in channel FORGE [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:99) ~[MessageToMessageDecoder.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?] [06:38:19 INFO]: Client> at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:71) [FMLProxyPacket.class:?] [06:38:19 INFO]: Client> at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:198) [ef.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.multiplayer.GuiConnecting.func_73876_c(SourceFile:76) [bbe.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1645) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:952) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:869) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.main.Main.main(SourceFile:103) [Main.class:?] [06:38:19 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?] [06:38:19 INFO]: Client> at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?] [06:38:19 INFO]: Client> Caused by: java.lang.NullPointerException: Undefined message for discriminator 2 in channel FORGE [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:71) ~[FMLIndexedMessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:16) ~[FMLIndexedMessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89) ~[MessageToMessageDecoder.class:?] [06:38:19 INFO]: Client> ... 18 more [06:38:19 INFO]: Client> [06:38:19] [Client thread/ERROR] [FML]: There was a critical exception handling a packet on channel FORGE [06:38:19 INFO]: Client> io.netty.handler.codec.DecoderException: java.lang.NullPointerException: Undefined message for discriminator 2 in channel FORGE [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:99) ~[MessageToMessageDecoder.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) ~[DefaultChannelPipeline.class:?] [06:38:19 INFO]: Client> at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) ~[EmbeddedChannel.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:71) [FMLProxyPacket.class:?] [06:38:19 INFO]: Client> at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:198) [ef.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.multiplayer.GuiConnecting.func_73876_c(SourceFile:76) [bbe.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1645) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:952) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:869) [azd.class:?] [06:38:19 INFO]: Client> at net.minecraft.client.main.Main.main(SourceFile:103) [Main.class:?] [06:38:19 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51] [06:38:19 INFO]: Client> at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?] [06:38:19 INFO]: Client> at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?] [06:38:19 INFO]: Client> Caused by: java.lang.NullPointerException: Undefined message for discriminator 2 in channel FORGE [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:71) ~[FMLIndexedMessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:16) ~[FMLIndexedMessageToMessageCodec.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89) ~[MessageToMessageDecoder.class:?] [06:38:19 INFO]: Client> ... 18 more [06:38:19 INFO]: Client> [06:38:19] [Netty Client IO #1/ERROR] [FML]: NetworkDispatcher exception [06:38:19 INFO]: Client> io.netty.handler.codec.EncoderException: java.io.IOException: Can't serialize unregistered packet [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:129) ~[MessageToByteEncoder.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.invokeWrite(DefaultChannelHandlerContext.java:644) ~[DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:698) ~[DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:637) ~[DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at cpw.mods.fml.common.network.handshake.NetworkDispatcher.write(NetworkDispatcher.java:405) ~[NetworkDispatcher.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.invokeWrite(DefaultChannelHandlerContext.java:644) ~[DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:698) ~[DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.writeAndFlush(DefaultChannelHandlerContext.java:688) ~[DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelHandlerContext.writeAndFlush(DefaultChannelHandlerContext.java:717) ~[DefaultChannelHandlerContext.class:?] [06:38:19 INFO]: Client> at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:893) ~[DefaultChannelPipeline.class:?] [06:38:19 INFO]: Client> at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:239) ~[AbstractChannel.class:?] [06:38:19 INFO]: Client> at net.minecraft.network.NetworkManager$1.run(NetworkManager.java:159) [eg.class:?] [06:38:19 INFO]: Client> at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:354) [singleThreadEventExecutor.class:?] [06:38:19 INFO]: Client> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:348) [NioEventLoop.class:?] [06:38:19 INFO]: Client> at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101) [singleThreadEventExecutor$2.class:?] [06:38:19 INFO]: Client> at java.lang.Thread.run(Thread.java:744) [?:1.7.0_51] [06:38:19 INFO]: Client> Caused by: java.io.IOException: Can't serialize unregistered packet [06:38:19 INFO]: Client> at net.minecraft.util.MessageSerializer.encode(SourceFile:28) ~[er.class:?] [06:38:19 INFO]: Client> at net.minecraft.util.MessageSerializer.encode(SourceFile:14) ~[er.class:?] [06:38:19 INFO]: Client> at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:111) ~[MessageToByteEncoder.class:?] [06:38:19 INFO]: Client> ... 15 more [06:38:19 INFO]: Client> [06:38:19] [Client thread/INFO] [FML]: [Client thread] Client side modded connection established Since this is the first time testing mods across TCP, I expected no problems. Vanilla works perfectly. This mod is so simple it only creates a few ores and some smelted items. Earlier on in the client log, I am seeing this (never saw it before): 06:38:00 INFO]: Client> [06:38:00] [Client thread/ERROR] [FML]: Unable to determine registrant mod for net.minecraftforge.common.ForgeInternalHandler@6beebab1. This is a critical error and should be impossible [06:38:00 INFO]: Client> java.lang.Throwable [06:38:00 INFO]: Client> at cpw.mods.fml.common.eventhandler.EventBus.register(EventBus.java:42) [EventBus.class:?] [06:38:00 INFO]: Client> at net.minecraftforge.common.MinecraftForge.initialize(MinecraftForge.java:46) [MinecraftForge.class:?] [06:38:00 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51] [06:38:00 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51] [06:38:00 INFO]: Client> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51] [06:38:00 INFO]: Client> at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51] [06:38:00 INFO]: Client> at cpw.mods.fml.common.FMLCommonHandler.callForgeMethod(FMLCommonHandler.java:184) [FMLCommonHandler.class:?] [06:38:00 INFO]: Client> at cpw.mods.fml.common.FMLCommonHandler.beginLoading(FMLCommonHandler.java:96) [FMLCommonHandler.class:?] [06:38:00 INFO]: Client> at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:178) [FMLClientHandler.class:?] [06:38:00 INFO]: Client> at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:495) [azd.class:?] [06:38:00 INFO]: Client> at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:849) [azd.class:?] [06:38:00 INFO]: Client> at net.minecraft.client.main.Main.main(SourceFile:103) [Main.class:?] [06:38:00 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51] [06:38:00 INFO]: Client> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51] [06:38:00 INFO]: Client> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51] [06:38:00 INFO]: Client> at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51] [06:38:00 INFO]: Client> at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?] [06:38:00 INFO]: Client> at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?] -S- (if I helped, please click Thank and applaud) http://6upnqa.dm2301.livefilestore.com/y2mtf-vG7Tqq1TiiVpIm53KWj7294NDPoHfSHHb4PzZiMAUfRCfK0UY0MwOu7Q3zTBNVTKqWjr2-xgBfFRpQT5p-QivtvknPpoABMNUw9br9WuZcBFkjePhnAbW500gVm-P/sequiturian.png[/img]
March 15, 201411 yr Author Never mind! I guess the forge release caused the problem. After setting both to 1029, the problem disappeared. I am going to update both to the cutting edge and see what shakes out now. -S- (if I helped, please click Thank and applaud) http://6upnqa.dm2301.livefilestore.com/y2mtf-vG7Tqq1TiiVpIm53KWj7294NDPoHfSHHb4PzZiMAUfRCfK0UY0MwOu7Q3zTBNVTKqWjr2-xgBfFRpQT5p-QivtvknPpoABMNUw9br9WuZcBFkjePhnAbW500gVm-P/sequiturian.png[/img]
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