Hello everyone,

If I post, it's because I'm desesperated, why ? Because everytime I used to try connecting my server of my mod (Eternal Frost) I crash with a non-sense message ! :'( I've did all thing we need, put Side.CLIENT everywhere it was needed with 10 time verify it without getting any correct

 

So, here is my error message when I try to connect my server ( Mod_Freezer is my mod Eternal frost ) :

2012-10-23 17:35:35 [iNFO] [ForgeModLoader] Forge Mod Loader version 3.1.35.394 for Minecraft client:1.3.2, server:1.3.2 loading
2012-10-23 17:35:48 [iNFO] [sTDOUT] 195 recipes
2012-10-23 17:35:48 [iNFO] [sTDOUT] 27 achievements
2012-10-23 17:35:50 [iNFO] [sTDERR] 2012-10-23 17:35:50 [iNFO] Starting minecraft server version 1.3.2
2012-10-23 17:35:51 [iNFO] [ForgeModLoader] Attempting early MinecraftForge initialization
2012-10-23 17:35:51 [iNFO] [sTDOUT] MinecraftForge v4.2.5.303 Initialized
2012-10-23 17:35:51 [iNFO] [ForgeModLoader] MinecraftForge v4.2.5.303 Initialized
2012-10-23 17:35:52 [iNFO] [ForgeModLoader] Completed early MinecraftForge initialization
2012-10-23 17:35:52 [iNFO] [ForgeModLoader] Searching Eternal Frost\jars\mods for mods
2012-10-23 17:36:19 [iNFO] [ForgeModLoader] Attempting to reparse the mod container bin
2012-10-23 17:36:34 [iNFO] [ForgeModLoader] Forge Mod Loader has identified 3 mods to load
2012-10-23 17:36:37 [iNFO] [ForgeModLoader] Configured a dormant chunk cache size of 0
2012-10-23 17:36:38 [iNFO] [sTDERR] 2012-10-23 17:36:38 [iNFO] Loading properties
2012-10-23 17:36:38 [iNFO] [sTDERR] 2012-10-23 17:36:38 [iNFO] Default game type: SURVIVAL
2012-10-23 17:36:38 [iNFO] [sTDERR] 2012-10-23 17:36:38 [iNFO] Generating keypair
2012-10-23 17:36:52 [iNFO] [sTDERR] 2012-10-23 17:36:52 [iNFO] Starting Minecraft server on *:25565
2012-10-23 17:36:53 [iNFO] [sTDERR] 2012-10-23 17:36:53 [WARNING] **** SERVER IS RUNNING IN OFFLINE/INSECURE MODE!
2012-10-23 17:36:53 [iNFO] [sTDERR] 2012-10-23 17:36:53 [WARNING] The server will make no attempt to authenticate usernames. Beware.
2012-10-23 17:36:53 [iNFO] [sTDERR] 2012-10-23 17:36:53 [WARNING] While this makes the game possible to play without internet access, it also opens up the ability for hackers to connect with any username they choose.
2012-10-23 17:36:53 [iNFO] [sTDERR] 2012-10-23 17:36:53 [WARNING] To change this, set "online-mode" to "true" in the server.properties file.
2012-10-23 17:37:01 [iNFO] [ForgeModLoader] Forge Mod Loader has successfully loaded 3 mods
2012-10-23 17:37:03 [iNFO] [sTDERR] 2012-10-23 17:37:03 [iNFO] Preparing level "mcpworld"
2012-10-23 17:37:06 [iNFO] [ForgeModLoader] Loading dimension 0 (mcpworld) (net.minecraft.src.DedicatedServer@54e123)
2012-10-23 17:37:06 [iNFO] [ForgeModLoader] Loading dimension 4 (mcpworld) (net.minecraft.src.DedicatedServer@54e123)
2012-10-23 17:37:07 [iNFO] [ForgeModLoader] Loading dimension 1 (mcpworld) (net.minecraft.src.DedicatedServer@54e123)
2012-10-23 17:37:07 [iNFO] [ForgeModLoader] Loading dimension -1 (mcpworld) (net.minecraft.src.DedicatedServer@54e123)
2012-10-23 17:37:07 [iNFO] [sTDERR] 2012-10-23 17:37:07 [iNFO] Preparing start region for level 0
2012-10-23 17:37:08 [iNFO] [sTDERR] 2012-10-23 17:37:08 [iNFO] Preparing spawn area: 8%
2012-10-23 17:37:09 [iNFO] [sTDERR] 2012-10-23 17:37:09 [iNFO] Preparing spawn area: 81%
2012-10-23 17:37:09 [iNFO] [sTDERR] 2012-10-23 17:37:09 [iNFO] Done (5,444s)! For help, type "help" or "?"
2012-10-23 17:37:15 [iNFO] [sTDERR] 2012-10-23 17:37:15 [iNFO] /127.0.0.1:51061 lost connection
2012-10-23 17:37:17 [iNFO] [sTDERR] 2012-10-23 17:37:17 [iNFO] User Player434 connecting with mods [mod_Freezer]
2012-10-23 17:37:17 [iNFO] [ForgeModLoader] User Player434 connecting with mods [mod_Freezer]
2012-10-23 17:37:18 [iNFO] [sTDERR] java.lang.NoClassDefFoundError: net/minecraft/src/WorldClient
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.src.ServerConfigurationManager.createPlayerForUser(ServerConfigurationManager.java:297)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.src.NetLoginHandler.completeConnection(NetLoginHandler.java:162)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at cpw.mods.fml.common.network.FMLNetworkHandler.handleClientConnection(FMLNetworkHandler.java:155)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionReceivedFromClient(FMLNetworkHandler.java:109)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.src.NetLoginHandler.initializePlayerConnection(NetLoginHandler.java:151)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.src.NetLoginHandler.tryLogin(NetLoginHandler.java:53)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.src.ServerListenThread.processPendingConnections(ServerListenThread.java:50)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.src.DedicatedServerListenThread.networkTick(DedicatedServerListenThread.java:31)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:650)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.src.DedicatedServer.updateTimeLightAndEntities(DedicatedServer.java:241)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:565)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at net.minecraft.src.ThreadServerApplication.run(ThreadServerApplication.java:18)
2012-10-23 17:37:18 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: net.minecraft.src.WorldClient
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:125)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at java.lang.ClassLoader.loadClass(Unknown Source)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at java.lang.ClassLoader.loadClass(Unknown Source)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	... 13 more
2012-10-23 17:37:18 [iNFO] [sTDERR] Caused by: java.lang.NullPointerException
2012-10-23 17:37:18 [iNFO] [sTDERR] 	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:119)
2012-10-23 17:37:18 [iNFO] [sTDERR] 	... 15 more
2012-10-23 17:37:18 [iNFO] [sTDERR] 2012-10-23 17:37:18 [sEVERE] Encountered an unexpected exception NoClassDefFoundError
java.lang.NoClassDefFoundError: net/minecraft/src/WorldClient
at net.minecraft.src.ServerConfigurationManager.createPlayerForUser(ServerConfigurationManager.java:297)
at net.minecraft.src.NetLoginHandler.completeConnection(NetLoginHandler.java:162)
at cpw.mods.fml.common.network.FMLNetworkHandler.handleClientConnection(FMLNetworkHandler.java:155)
at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionReceivedFromClient(FMLNetworkHandler.java:109)
at net.minecraft.src.NetLoginHandler.initializePlayerConnection(NetLoginHandler.java:151)
at net.minecraft.src.NetLoginHandler.tryLogin(NetLoginHandler.java:53)
at net.minecraft.src.ServerListenThread.processPendingConnections(ServerListenThread.java:50)
at net.minecraft.src.DedicatedServerListenThread.networkTick(DedicatedServerListenThread.java:31)
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:650)
at net.minecraft.src.DedicatedServer.updateTimeLightAndEntities(DedicatedServer.java:241)
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:565)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
at net.minecraft.src.ThreadServerApplication.run(ThreadServerApplication.java:18)
Caused by: java.lang.ClassNotFoundException: net.minecraft.src.WorldClient
at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:125)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 13 more
Caused by: java.lang.NullPointerException
at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:119)
... 15 more
2012-10-23 17:37:18 [iNFO] [sTDERR] 2012-10-23 17:37:18 [sEVERE] This crash report has been saved to: crash-2012-10-23_17.37.18-server.txt

I've searched EVERYWHERE where WorldClient can be wrong But NOTHING, I've never put WorldClient in my class and seem to be good in other class.

 

So, need a serious help ! 

Thanks in advance,

- Poiuytrezay alias Tempetek

Are you editing base class files? And if not, go and read a tutorial on the internet on how to make a mod folder mod.

 

Are you editing base class files? And if not, go and read a tutorial on the internet on how to make a mod folder mod.

Yeah, editing EntityPlayer, GuiIngame for my Hypothermia bar and also ContainerWorkbench and BiomeGenBase 

Does it change anything ?

It's probably better if you try and avoid it (look for hooks to do what you're doing, or ask in suggestions for a method doing what you need to be added)  - and the error is probably occurring in EntityPlayer - you might be referencing WorldClient there.