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INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Mar 23, 2016 12:03:01 AM net.minecraft.launchwrapper.LogWrapper log
INFO: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Mar 23, 2016 12:03:01 AM net.minecraft.launchwrapper.LogWrapper log
INFO: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
2016-03-23 00:03:01 [INFO] [ForgeModLoader] Forge Mod Loader version 6.4.50.1,345 for Minecraft 1.6.4 loading
2016-03-23 00:03:01 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_25, running on Windows 10:amd64:10.0, installed at C:\Program Files (x86)\Minecraft\runtime\jre-x64\1.8.0_25
2016-03-23 00:03:01 [INFO] [STDERR] java.lang.NoClassDefFoundError: org/apache/logging/log4j/LogManager
2016-03-23 00:03:01 [INFO] [STDERR] at com.bloodnbonesgaming.advancedspawncontrol.core.ASCCore.<clinit>(ASCCore.java:21)
2016-03-23 00:03:01 [INFO] [STDERR] at java.lang.Class.forName0(Native Method)
2016-03-23 00:03:01 [INFO] [STDERR] at java.lang.Class.forName(Class.java:344)
2016-03-23 00:03:01 [INFO] [STDERR] at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:386)
2016-03-23 00:03:01 [INFO] [STDERR] at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:310)
2016-03-23 00:03:01 [INFO] [STDERR] at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:212)
2016-03-23 00:03:01 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90)
2016-03-23 00:03:01 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67)
2016-03-23 00:03:01 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34)
2016-03-23 00:03:01 [INFO] [STDERR] at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:124)
2016-03-23 00:03:01 [INFO] [STDERR] at net.minecraft.launchwrapper.Launch.launch(Launch.java:111)
2016-03-23 00:03:01 [INFO] [STDERR] at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
2016-03-23 00:03:01 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.LogManager
2016-03-23 00:03:01 [INFO] [STDERR] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:186)
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

help me please