Java Errors

2013-05-21 21:51:00 [INFO] [STDOUT] Adding Accesstransformer map: codechickencore_at.cfg
2013-05-21 21:51:01 [INFO] [STDERR] Exception in thread "main" java.lang.RuntimeException: java.lang.ExceptionInInitializerError
2013-05-21 21:51:01 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:175)
2013-05-21 21:51:01 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:133)
2013-05-21 21:51:01 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:33)
2013-05-21 21:51:01 [INFO] [STDERR]     at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1376)
2013-05-21 21:51:01 [INFO] [STDERR] Caused by: java.lang.ExceptionInInitializerError
2013-05-21 21:51:01 [INFO] [STDERR]     at codechicken.core.ConfigFile.saveConfig(ConfigFile.java:280)
2013-05-21 21:51:01 [INFO] [STDERR]     at codechicken.core.ConfigFile.setComment(ConfigFile.java:303)
2013-05-21 21:51:01 [INFO] [STDERR]     at codechicken.core.asm.TweakTransformer.load(TweakTransformer.java:36)
2013-05-21 21:51:01 [INFO] [STDERR]     at codechicken.core.asm.CodeChickenCorePlugin.call(CodeChickenCorePlugin.java:66)
2013-05-21 21:51:01 [INFO] [STDERR]     at codechicken.core.asm.CodeChickenCorePlugin.call(CodeChickenCorePlugin.java:1)
2013-05-21 21:51:01 [INFO] [STDERR]     at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:261)
2013-05-21 21:51:01 [INFO] [STDERR]     at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)
2013-05-21 21:51:01 [INFO] [STDERR]     ... 3 more
2013-05-21 21:51:01 [INFO] [STDERR] Caused by: java.lang.NullPointerException
2013-05-21 21:51:01 [INFO] [STDERR]     at cpw.mods.fml.common.Loader.<init>(Loader.java:174)
2013-05-21 21:51:01 [INFO] [STDERR]     at cpw.mods.fml.common.Loader.instance(Loader.java:152)
2013-05-21 21:51:01 [INFO] [STDERR]     at cpw.mods.fml.common.FMLCommonHandler.<init>(FMLCommonHandler.java:88)
2013-05-21 21:51:01 [INFO] [STDERR]     at cpw.mods.fml.common.FMLCommonHandler.<clinit>(FMLCommonHandler.java:77)
2013-05-21 21:51:01 [INFO] [STDERR]     ... 10 more