013-05-08 15:12:54 [SEVERE] [ForgeModLoader] A critical problem occured registering the ASM transformer class cpw.mods.fml.common.asm.transformers.DeobfuscationTransformer
java.lang.ClassNotFoundException: cpw.mods.fml.common.asm.transformers.DeobfuscationTransformer
	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:238)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at cpw.mods.fml.relauncher.RelaunchClassLoader.registerTransformer(RelaunchClassLoader.java:122)
	at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:278)
	at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
	at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)
	at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)
	at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1354)
Caused by: java.lang.AbstractMethodError
	at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:352)
	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:225)
	... 8 more
2013-05-08 15:12:54 [INFO] [STDERR] Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: cpw.mods.fml.common.asm.FMLSanityChecker
2013-05-08 15:12:54 [INFO] [STDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)
2013-05-08 15:12:54 [INFO] [STDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.relaunchServer(FMLRelauncher.java:147)
2013-05-08 15:12:54 [INFO] [STDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.handleServerRelaunch(FMLRelauncher.java:45)
2013-05-08 15:12:54 [INFO] [STDERR] 	at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1354)
2013-05-08 15:12:54 [INFO] [STDERR] Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: cpw.mods.fml.common.asm.FMLSanityChecker
2013-05-08 15:12:54 [INFO] [STDERR] 	at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:306)
2013-05-08 15:12:54 [INFO] [STDERR] 	at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
2013-05-08 15:12:54 [INFO] [STDERR] 	... 3 more
2013-05-08 15:12:54 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.common.asm.FMLSanityChecker
2013-05-08 15:12:54 [INFO] [STDERR] 	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:238)
2013-05-08 15:12:54 [INFO] [STDERR] 	at java.lang.ClassLoader.loadClass(Unknown Source)
2013-05-08 15:12:54 [INFO] [STDERR] 	at java.lang.ClassLoader.loadClass(Unknown Source)
2013-05-08 15:12:54 [INFO] [STDERR] 	at java.lang.Class.forName0(Native Method)
2013-05-08 15:12:54 [INFO] [STDERR] 	at java.lang.Class.forName(Unknown Source)
2013-05-08 15:12:54 [INFO] [STDERR] 	at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:295)
2013-05-08 15:12:54 [INFO] [STDERR] 	... 4 more
2013-05-08 15:12:54 [INFO] [STDERR] Caused by: java.lang.AbstractMethodError
2013-05-08 15:12:54 [INFO] [STDERR] 	at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:352)
2013-05-08 15:12:54 [INFO] [STDERR] 	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:225)
2013-05-08 15:12:54 [INFO] [STDERR] 	... 9 more