Shellzilla13

Oh, guys! I just fixed mine by going into the Tekkit settings in the launcher (little cog wheel right below the tekkit logo) and choosing "Reset Pack". Then I chose an older version and hit "Save". Doesn't really fix the issue, but you're still able to play.

The same thing is happening to me. I have the latest version of Java. --session token:8cd2ce3e157b4218aeaf02c3cc84b711:ddbfbdac1e93412fb1c0077848f6d079 --version 1.6.4-Forge9.11.1.965 --gameDir C:UsersShellzillaAppDataRoaming.technicmodpackstekkitmain --assetsDir C:UsersShellzillaAppDataRoaming.technicassetsvirtuallegacy --tweakClass cpw.mods.fml.common.launcher.FMLTweaker --title Tekkit --icon C:UsersShellzillaAppDataRoaming.technicassets/packs/tekkitmain/icon.png [b#431] 2014/03/20 13:43:26 [iNFO] Analytics Response [runModpack]: 200 [b#431] 2014/03/20 13:43:26 [iNFO] Mar 20, 2014 1:43:26 PM net.minecraft.launchwrapper.LogWrapper log [b#431] 2014/03/20 13:43:26 [iNFO] INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker [b#431] 2014/03/20 13:43:26 [iNFO] Mar 20, 2014 1:43:26 PM net.minecraft.launchwrapper.LogWrapper log [b#431] 2014/03/20 13:43:26 [iNFO] INFO: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker [b#431] 2014/03/20 13:43:26 [iNFO] Mar 20, 2014 1:43:26 PM net.minecraft.launchwrapper.LogWrapper log [b#431] 2014/03/20 13:43:26 [iNFO] INFO: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker [b#431] 2014/03/20 13:43:26 [iNFO] 2014-03-20 13:43:26 [iNFO] [ForgeModLoader] Forge Mod Loader version 6.4.49.965 for Minecraft 1.6.4 loading [b#431] 2014/03/20 13:43:26 [iNFO] 2014-03-20 13:43:26 [iNFO] [ForgeModLoader] Java is Java HotSpot 64-Bit Server VM, version 1.6.0_23, running on Windows 7:amd64:6.1, installed at C:Program FilesJavajre6 [b#431] 2014/03/20 13:43:26 [iNFO] 2014-03-20 13:43:26 [WARNING] [ForgeModLoader] The coremod codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:26 [iNFO] 2014-03-20 13:43:26 [WARNING] [ForgeModLoader] The coremod appeng.transformer.AppEngCore does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:26 [iNFO] 2014-03-20 13:43:26 [iNFO] [ForgeModLoader] [AppEng] Core Init [b#431] 2014/03/20 13:43:26 [iNFO] 2014-03-20 13:43:26 [WARNING] [ForgeModLoader] The coremod calclavia.lib.CalclaviaPluginLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:26 [iNFO] 2014-03-20 13:43:26 [WARNING] [ForgeModLoader] The coremod codechicken.core.launch.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:27 [iNFO] 2014-03-20 13:43:27 [iNFO] [sTDOUT] Downloading file http://files.minecraftforge.net/CodeChickenLib//CodeChickenLib-universal-1.6.4-1.0.0.62.jar [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDOUT] Download complete [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] Warning: version of ForgeMultipart-universal-1.6.4-, 1.0.0.250 is newer than request 1.0.0.244 [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [WARNING] [ForgeModLoader] The coremod cofh.asm.LoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [WARNING] [ForgeModLoader] The coremod mods.immibis.microblocks.coremod.MicroblocksCoreMod does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [WARNING] [ForgeModLoader] The coremod invtweaks.forge.asm.FMLPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [WARNING] [ForgeModLoader] The coremod logisticspipes.asm.LogisticsPipesCoreLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [WARNING] [ForgeModLoader] The coremod micdoodle8.mods.miccore.MicdoodlePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [WARNING] [ForgeModLoader] The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [WARNING] [ForgeModLoader] The coremod openmods.OpenModsCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [WARNING] [ForgeModLoader] The coremod codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] java.lang.UnsupportedClassVersionError: mrtjp/projectred/compatibility/CompatibilityCorePlugin : Unsupported major.minor version 51.0 [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.lang.ClassLoader.defineClass1(Native Method) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.lang.ClassLoader.defineClassCond(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.lang.ClassLoader.defineClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.security.SecureClassLoader.defineClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.net.URLClassLoader.defineClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.net.URLClassLoader.access$000(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.security.AccessController.doPrivileged(Native Method) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.net.URLClassLoader.findClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:113) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.lang.Class.forName0(Native Method) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at java.lang.Class.forName(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:386) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:310) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:212) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:124) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at net.minecraft.launchwrapper.Launch.launch(Launch.java:111) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [iNFO] [sTDERR] at net.minecraft.launchwrapper.Launch.main(Launch.java:27) [b#431] 2014/03/20 13:43:28 [iNFO] 2014-03-20 13:43:28 [sEVERE] [ForgeModLoader] An error occurred trying to configure the minecraft home at C:UsersShellzillaAppDataRoaming.technicmodpackstekkitmain for Forge Mod Loader [b#431] 2014/03/20 13:43:28 [iNFO] java.lang.UnsupportedClassVersionError: mrtjp/projectred/compatibility/CompatibilityCorePlugin : Unsupported major.minor version 51.0 [b#431] 2014/03/20 13:43:28 [iNFO] at java.lang.ClassLoader.defineClass1(Native Method) [b#431] 2014/03/20 13:43:28 [iNFO] at java.lang.ClassLoader.defineClassCond(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] at java.lang.ClassLoader.defineClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] at java.security.SecureClassLoader.defineClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] at java.net.URLClassLoader.defineClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] at java.net.URLClassLoader.access$000(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] at java.net.URLClassLoader$1.run(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] at java.security.AccessController.doPrivileged(Native Method) [b#431] 2014/03/20 13:43:28 [iNFO] at java.net.URLClassLoader.findClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:113) [b#431] 2014/03/20 13:43:28 [iNFO] at java.lang.ClassLoader.loadClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] at java.lang.ClassLoader.loadClass(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] at java.lang.Class.forName0(Native Method) [b#431] 2014/03/20 13:43:28 [iNFO] at java.lang.Class.forName(Unknown Source) [b#431] 2014/03/20 13:43:28 [iNFO] at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:386) [b#431] 2014/03/20 13:43:28 [iNFO] at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:310) [b#431] 2014/03/20 13:43:28 [iNFO] at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:212) [b#431] 2014/03/20 13:43:28 [iNFO] at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90) [b#431] 2014/03/20 13:43:28 [iNFO] at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67) [b#431] 2014/03/20 13:43:28 [iNFO] at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34) [b#431] 2014/03/20 13:43:28 [iNFO] at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:124) [b#431] 2014/03/20 13:43:28 [iNFO] at net.minecraft.launchwrapper.Launch.launch(Launch.java:111) [b#431] 2014/03/20 13:43:28 [iNFO] at net.minecraft.launchwrapper.Launch.main(Launch.java:27)