A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at cpw.mods.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.ava:43)
        at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:12)
Caused by: java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/v1_7_R4/util/ServerShutdownThread
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
        at java.lang.Class.getMethod0(Unknown Source)
        at java.lang.Class.getMethod(Unknown Source)
        at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
        at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
        ... 6 more
Caused by: java.lang.ClassNotFoundException: org.bukkit.craftbukkit.v1_7_R4.util.ServerShutdownThread
        at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 12 more
Caused by: java.lang.NullPointerException
        at org.objectweb.asm.ClassReader.<init>(Unknown Source)
        at cpw.mods.fml.common.asm.transformers.TerminalTransformer.transform(TerminalTransformer.java:14)
        at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:276)
        at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:174)
        ... 14 more