What went wrong and how do I fix it?

Minecraft 1.7.10, Forge 10.13.4.1614

Here's the log:
 

Quote

An error occurred trying to configure the minecraft home at C:\Users\ender\AppData\Roaming\.minecraft for Forge Mod Loader java.lang.NoClassDefFoundError: codechicken/lib/asm/ASMInit at codechicken.nei.asm.NEICorePlugin.<init>(NEICorePlugin.java:18) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:422) at java.lang.Class.newInstance(Class.java:442) at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:501) at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:389) at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:221) at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90) at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67) at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34) at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:126) at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) Caused by: java.lang.ClassNotFoundException: codechicken.lib.asm.ASMInit at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 15 more Caused by: java.lang.NullPointerException at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) ... 17 more