Modpack Server Problem

[kylerohlfing]

I host a small tekkit server for my friends, but recently it's stopped working properly. When I try to restart it, it starts to then stops. It always freezes on the same line, and im not sure if it's getting an error or just processing. Ive left it to do this for about 15 minutes,wiping the server and re-downlaoding the files. It always seems to stick on  the same line. Does anyone know what it means or how I can fix it? Heres the last few lines in the consoie:

 

03.12 16:41:15 [server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)

03.12 16:41:15 [server] INFO at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:69)

03.12 16:41:15 [server] INFO at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350)

03.12 16:41:15 [server] INFO at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:99)

03.12 16:41:15 [server] INFO at cpw.mods.fml.common.Loader.loadMods(Loader.java:511)

03.12 16:41:15 [server] INFO at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:112)

03.12 16:41:15 [server] INFO at com.google.common.eventbus.EventBus.post(EventBus.java:267)

03.12 16:41:15 [server] INFO at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

03.12 16:41:15 [server] INFO at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)

03.12 16:41:15 [server] INFO at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

03.12 16:41:15 [server] INFO at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

03.12 16:41:15 [server] INFO at java.lang.reflect.Method.invoke(Method.java:606)

03.12 16:41:15 [server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

03.12 16:41:15 [server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

03.12 16:41:15 [server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

03.12 16:41:15 [server] INFO at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:181)

03.12 16:41:15 [server] INFO at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:201)

03.12 16:41:15 [server] INFO at com.google.common.eventbus.EventBus.post(EventBus.java:267)

03.12 16:41:15 [server] INFO at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

03.12 16:41:15 [server] INFO at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)

03.12 16:41:15 [server] INFO at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

03.12 16:41:15 [server] INFO at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

03.12 16:41:15 [server] INFO at java.lang.reflect.Method.invoke(Method.java:606)

03.12 16:41:15 [server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

03.12 16:41:15 [server] INFO at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)

03.12 16:41:15 [server] INFO at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:524)

03.12 16:41:15 [server] INFO at cpw.mods.fml.common.ProxyInjector.inject(ProxyInjector.java:58)

03.12 16:41:15 [server] INFO at java.lang.Class.forName(Class.java:270)

03.12 16:41:15 [server] INFO at java.lang.Class.forName0(Native Method)

03.12 16:41:15 [server] INFO java.lang.NoClassDefFoundError: net/minecraft/client/renderer/entity/Render

03.12 16:41:15 [Multicraft] Skipped 80 lines due to rate limit (30/s)

03.12 16:41:13 [server] INFO Activating mod CodeChickenCore

03.12 16:41:13 [server] INFO Activating mod Forge

03.12 16:41:13 [server] INFO Activating mod FML

03.12 16:41:13 [server] INFO Activating mod mcp

 

 

[plowmanplow]

03.12 16:41:15 [Server] INFO java.lang.NoClassDefFoundError: net/minecraft/client/renderer/entity/Render

You have a client-only mod in your server mods folder, or a mod which "should" work in SMP but does not due to lousy coding. I'm assuming this is a custom modpack server of some sort? Please provide the API URL for your custom modpack if so.