Clear 1.5.1 and forge 7.7.1.611
Any ideas?
2013-04-21 14:18:44 [iNFO] [ForgeModLoader] Forge Mod Loader version 5.1.8.611 for Minecraft 1.5.1 loading
2013-04-21 14:18:44 [iNFO] [ForgeModLoader] Java is Java HotSpot 64-Bit Server VM, version 1.8.0-ea, running on Linux:amd64:3.2.0-40-generic, installed at /usr/lib/jvm/java-8-oracle/jre
2013-04-21 14:18:44 [FINE] [ForgeModLoader] Java classpath at launch is minecraft.jar
2013-04-21 14:18:44 [FINE] [ForgeModLoader] Java library path at launch is /usr/lib/nvidia-current:/usr/lib32/nvidia-current::/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2013-04-21 14:18:44 [FINE] [ForgeModLoader] Enabling runtime deobfuscation
2013-04-21 14:18:50 [iNFO] [sTDERR] Exception in thread "Thread-3" java.lang.RuntimeException: java.lang.NoClassDefFoundError: cpw/mods/fml/common/FMLLog
2013-04-21 14:18:50 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)
2013-04-21 14:18:50 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:259)
2013-04-21 14:18:50 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:229)
2013-04-21 14:18:50 [iNFO] [sTDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)
2013-04-21 14:18:50 [iNFO] [sTDERR] at net.minecraft.Launcher.replace(Launcher.java:136)
2013-04-21 14:18:50 [iNFO] [sTDERR] at net.minecraft.Launcher$1.run(Launcher.java:79)
2013-04-21 14:18:50 [iNFO] [sTDERR] Caused by: java.lang.NoClassDefFoundError: cpw/mods/fml/common/FMLLog
2013-04-21 14:18:50 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.Downloader.updateProgressString(Downloader.java:111)
2013-04-21 14:18:50 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:98)
2013-04-21 14:18:50 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
2013-04-21 14:18:50 [iNFO] [sTDERR] ... 5 more
2013-04-21 14:18:50 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.common.FMLLog
2013-04-21 14:18:50 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(URLClassLoader.java:365)
2013-04-21 14:18:50 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(URLClassLoader.java:354)
2013-04-21 14:18:50 [iNFO] [sTDERR] at java.security.AccessController.doPrivileged(Native Method)
2013-04-21 14:18:50 [iNFO] [sTDERR] at java.net.URLClassLoader.findClass(URLClassLoader.java:353)
2013-04-21 14:18:50 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(ClassLoader.java:422)
2013-04-21 14:18:50 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(ClassLoader.java:355)
2013-04-21 14:18:50 [iNFO] [sTDERR] ... 8 more