Help! Making a custom modpack server and i get an error

[dewey2554]

I am trying to make a custom server and i get this error:

Exception in thread "main" java.lang.NoClassDefFoundError: ab

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)

at java.lang.ClassLoader.defineClass(ClassLoader.java:615)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

at java.net.URLClassLoader.access$000(URLClassLoader.java:58)

at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

Caused by: java.lang.ClassNotFoundException: ab

at java.net.URLClassLoader$1.run(URLClassLoader.java:202)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

... 12 more

logout

[Process completed]

[dewey2554]

Fixed

[dewey2554]

Now when i start up i get this error:

16:15:02 [sEVERE] java.lang.NoClassDefFoundError: net/minecraft/client/gui/GuiOptions

16:15:02 [sEVERE]at java.lang.Class.getDeclaredMethods0(Native Method)

16:15:02 [sEVERE]at java.lang.Class.privateGetDeclaredMethods(Class.java:2436)

16:15:02 [sEVERE]at java.lang.Class.getDeclaredMethods(Class.java:1793)

16:15:02 [sEVERE]at cpw.mods.fml.common.FMLModContainer.gatherAnnotations(FMLModContainer.java:319)

16:15:02 [sEVERE]at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:464)

16:15:02 [sEVERE]at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

16:15:02 [sEVERE]at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

16:15:02 [sEVERE]at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

16:15:02 [sEVERE]at java.lang.reflect.Method.invoke(Method.java:597)

16:15:02 [sEVERE]at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

16:15:02 [sEVERE]at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

16:15:02 [sEVERE]at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

16:15:02 [sEVERE]at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

16:15:02 [sEVERE]at com.google.common.eventbus.EventBus.post(EventBus.java:267)

16:15:02 [sEVERE]at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:165)

16:15:02 [sEVERE]at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

16:15:02 [sEVERE]at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

16:15:02 [sEVERE]at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

16:15:02 [sEVERE]at java.lang.reflect.Method.invoke(Method.java:597)

16:15:02 [sEVERE]at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

16:15:02 [sEVERE]at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

16:15:02 [sEVERE]at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

16:15:02 [sEVERE]at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

16:15:02 [sEVERE]at com.google.common.eventbus.EventBus.post(EventBus.java:267)

16:15:02 [sEVERE]at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:98)

16:15:02 [sEVERE]at cpw.mods.fml.common.Loader.loadMods(Loader.java:503)

16:15:02 [sEVERE]at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:85)

16:15:02 [sEVERE]at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350)

16:15:02 [sEVERE]at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:94)

16:15:02 [sEVERE]at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:644)

16:15:02 [sEVERE]at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)

16:15:02 [sEVERE] Caused by: java.lang.ClassNotFoundException: net.minecraft.client.gui.GuiOptions

16:15:02 [sEVERE]at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:273)

16:15:02 [sEVERE]at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

16:15:02 [sEVERE]at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

16:15:02 [sEVERE]... 31 more

16:15:02 [sEVERE] Caused by: java.lang.NullPointerException

16:15:02 [sEVERE] Encountered an unexpected exception NoClassDefFoundError

java.lang.NoClassDefFoundError: net/minecraft/client/gui/GuiOptions

at java.lang.Class.getDeclaredMethods0(Native Method)

at java.lang.Class.privateGetDeclaredMethods(Class.java:2436)

at java.lang.Class.getDeclaredMethods(Class.java:1793)

at cpw.mods.fml.common.FMLModContainer.gatherAnnotations(FMLModContainer.java:319)

at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:464)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

at com.google.common.eventbus.EventBus.post(EventBus.java:267)

at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:165)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

at com.google.common.eventbus.EventBus.post(EventBus.java:267)

at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:98)

at cpw.mods.fml.common.Loader.loadMods(Loader.java:503)

at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:85)

at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350)

at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:94)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:644)

at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)

Caused by: java.lang.ClassNotFoundException: net.minecraft.client.gui.GuiOptions

at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:273)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

... 31 more

Caused by: java.lang.NullPointerException

[Yotsune95]

I have been getting that too! I do not know why?