Adventure Backpack

Adventure Backpack

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Fatal error while using SHIFT+SCROLL on a server.

Opened this issue ยท 6 comments

commented

server outputs fatal error/kicks user while using shift + scroll combination together.

commented

I believe it's 1240

commented

Can you paste an error log? This description isn't very helpful :/

commented

22:50:47 [Server thread/ERROR] [FML]: SimpleChannelHandlerWrapper exception
22:50:47 java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
22:50:47 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:60) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:47 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:50) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:47 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:37) ~[SimpleChannelHandlerWrapper.class:?]
22:50:47 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:17) ~[SimpleChannelHandlerWrapper.class:?]
22:50:47 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?]
22:50:47 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:47 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:47 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
22:50:47 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:47 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:47 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
22:50:47 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:47 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:47 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
22:50:47 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:47 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:47 at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [MessageToMessageDecoder.class:?]
22:50:48 at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) [MessageToMessageCodec.class:?]
22:50:48 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:48 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:48 at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?]
22:50:48 at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?]
22:50:48 at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
22:50:48 at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
22:50:48 at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?]
22:50:48 at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?]
22:50:48 at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334) [lt.class:?]
22:50:48 at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?]
22:50:48 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
22:50:48 at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
22:50:48 Caused by: java.lang.ClassNotFoundException: net.minecraft.client.multiplayer.WorldClient
22:50:48 at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101) ~[launchwrapper-1.11.jar:?]
22:50:48 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:48 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:48 ... 30 more
22:50:48 [Server thread/ERROR] [FML]: There was a critical exception handling a packet on channel adventurebackpackch
22:50:49 java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
22:50:49 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:60) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:49 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:50) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:49 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:37) ~[SimpleChannelHandlerWrapper.class:?]
22:50:49 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:17) ~[SimpleChannelHandlerWrapper.class:?]
22:50:49 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?]
22:50:49 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:49 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:49 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
22:50:49 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:49 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:49 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
22:50:49 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:49 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:49 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
22:50:49 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:49 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:50 at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[MessageToMessageDecoder.class:?]
22:50:50 at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?]
22:50:50 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:50 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:50 at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) ~[DefaultChannelPipeline.class:?]
22:50:50 at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) ~[EmbeddedChannel.class:?]
22:50:50 at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
22:50:50 at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
22:50:50 at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?]
22:50:50 at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?]
22:50:50 at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334) [lt.class:?]
22:50:50 at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?]
22:50:50 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
22:50:50 at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
22:50:50 Caused by: java.lang.ClassNotFoundException: net.minecraft.client.multiplayer.WorldClient
22:50:50 at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101) ~[launchwrapper-1.11.jar:?]
22:50:50 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:50 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:51 ... 30 more
22:50:51 [Server thread/ERROR] [FML]: SimpleChannelHandlerWrapper exception
22:50:51 java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
22:50:51 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:60) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:51 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:50) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:51 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:37) ~[SimpleChannelHandlerWrapper.class:?]
22:50:51 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:17) ~[SimpleChannelHandlerWrapper.class:?]
22:50:51 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?]
22:50:51 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:51 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:51 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
22:50:51 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:51 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:51 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
22:50:51 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:51 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:51 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
22:50:51 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:51 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:51 at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [MessageToMessageDecoder.class:?]
22:50:52 at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) [MessageToMessageCodec.class:?]
22:50:52 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:52 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:52 at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?]
22:50:52 at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?]
22:50:52 at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
22:50:52 at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
22:50:52 at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?]
22:50:52 at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?]
22:50:52 at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334) [lt.class:?]
22:50:52 at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?]
22:50:52 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
22:50:52 at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
22:50:52 Caused by: java.lang.ClassNotFoundException: net.minecraft.client.multiplayer.WorldClient
22:50:52 at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101) ~[launchwrapper-1.11.jar:?]
22:50:52 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:52 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:52 ... 30 more
22:50:52 [Server thread/ERROR] [FML]: There was a critical exception handling a packet on channel adventurebackpackch
22:50:53 java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
22:50:53 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:60) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:53 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:50) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:53 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:37) ~[SimpleChannelHandlerWrapper.class:?]
22:50:53 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:17) ~[SimpleChannelHandlerWrapper.class:?]
22:50:53 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?]
22:50:53 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:53 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:53 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
22:50:53 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:53 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:53 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
22:50:53 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:53 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:53 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
22:50:53 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:53 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:54 at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[MessageToMessageDecoder.class:?]
22:50:54 at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?]
22:50:54 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:54 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:54 at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) ~[DefaultChannelPipeline.class:?]
22:50:54 at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) ~[EmbeddedChannel.class:?]
22:50:54 at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
22:50:54 at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
22:50:54 at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?]
22:50:54 at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?]
22:50:54 at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334) [lt.class:?]
22:50:54 at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?]
22:50:54 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
22:50:54 at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
22:50:54 Caused by: java.lang.ClassNotFoundException: net.minecraft.client.multiplayer.WorldClient
22:50:54 at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101) ~[launchwrapper-1.11.jar:?]
22:50:54 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:54 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:54 ... 30 more
22:50:55 [Server thread/ERROR] [FML]: SimpleChannelHandlerWrapper exception
22:50:55 java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
22:50:55 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:60) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:55 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:50) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:55 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:37) ~[SimpleChannelHandlerWrapper.class:?]
22:50:55 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:17) ~[SimpleChannelHandlerWrapper.class:?]
22:50:55 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?]
22:50:55 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:55 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:55 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
22:50:55 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:55 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:55 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
22:50:55 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:55 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:55 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
22:50:55 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:55 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:56 at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [MessageToMessageDecoder.class:?]
22:50:56 at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) [MessageToMessageCodec.class:?]
22:50:56 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
22:50:56 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
22:50:56 at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?]
22:50:56 at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?]
22:50:56 at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
22:50:56 at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
22:50:56 at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?]
22:50:56 at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?]
22:50:56 at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334) [lt.class:?]
22:50:56 at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?]
22:50:56 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
22:50:56 at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
22:50:56 Caused by: java.lang.ClassNotFoundException: net.minecraft.client.multiplayer.WorldClient
22:50:56 at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101) ~[launchwrapper-1.11.jar:?]
22:50:56 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:56 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:57 ... 30 more
22:50:57 [Server thread/ERROR] [FML]: There was a critical exception handling a packet on channel adventurebackpackch
22:50:57 java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
22:50:57 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:60) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:57 at com.darkona.adventurebackpack.network.CycleToolMessage$CycleToolMessageServerHandler.onMessage(CycleToolMessage.java:50) ~[CycleToolMessage$CycleToolMessageServerHandler.class:?]
22:50:57 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:37) ~[SimpleChannelHandlerWrapper.class:?]
22:50:57 at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:17) ~[SimpleChannelHandlerWrapper.class:?]
22:50:57 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?]
22:50:57 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:57 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:57 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
22:50:57 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:57 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:57 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
22:50:57 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:57 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:57 at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
22:50:57 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:57 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:57 at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[MessageToMessageDecoder.class:?]
22:50:58 at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?]
22:50:58 at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
22:50:58 at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
22:50:58 at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) ~[DefaultChannelPipeline.class:?]
22:50:58 at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) ~[EmbeddedChannel.class:?]
22:50:58 at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
22:50:58 at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
22:50:58 at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?]
22:50:58 at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?]
22:50:58 at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334) [lt.class:?]
22:50:58 at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?]
22:50:58 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
22:50:58 at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
22:50:58 Caused by: java.lang.ClassNotFoundException: net.minecraft.client.multiplayer.WorldClient
22:50:58 at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101) ~[launchwrapper-1.11.jar:?]
22:50:58 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:58 at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
22:50:58 ... 30 more

commented

This is really weird. I'm checking the code at the moment.
What version of forge are you using in client/server?

commented

It's very hard for me to test with servers, but I think it's fixed now. Fix available in the next version. Tentatively.

commented

Thanks a lot for your`s quick reply.