[18:16:02 INFO]: Client> java.lang.NoClassDefFoundError: org/apache/logging/log4j/LogManager
[18:16:02 INFO]: Client> 	at vazkii.tinkerer.preloader.ThaumicTLoaderContainer.<clinit>(ThaumicTLoaderContainer.java:21)
[18:16:02 INFO]: Client> 	at java.lang.Class.forName0(Native Method)
[18:16:02 INFO]: Client> 	at java.lang.Class.forName(Unknown Source)
[18:16:02 INFO]: Client> 	at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:386)
[18:16:02 INFO]: Client> 	at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:310)
[18:16:02 INFO]: Client> 	at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:212)
[18:16:02 INFO]: Client> 	at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90)
[18:16:02 INFO]: Client> 	at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67)
[18:16:02 INFO]: Client> 	at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34)
[18:16:02 INFO]: Client> 	at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:124)
[18:16:02 INFO]: Client> 	at net.minecraft.launchwrapper.Launch.launch(Launch.java:111)
[18:16:02 INFO]: Client> 	at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
[18:16:02 INFO]: Client> Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.LogManager
[18:16:02 INFO]: Client> 	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:186)
[18:16:02 INFO]: Client> 	at java.lang.ClassLoader.loadClass(Unknown Source)
[18:16:02 INFO]: Client> 	at java.lang.ClassLoader.loadClass(Unknown Source)
[18:16:02 INFO]: Client> 	... 12 more
[18:16:02 INFO]: Client> Caused by: java.lang.NullPointerException
[18:16:02 INFO]: Client> 	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:178)
[18:16:02 INFO]: Client> 	... 14 more