---- Minecraft Crash Report ---- // Oh - I know what I did wrong! Time: 3/7/13 10:29 PM Description: Failed to start game cpw.mods.fml.common.LoaderException: java.lang.ClassNotFoundException: invtweaks.InvTweaksMod at cpw.mods.fml.common.LoadController.transition(LoadController.java:130) at cpw.mods.fml.common.Loader.loadMods(Loader.java:504) at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:161) at net.minecraft.client.Minecraft.a(Minecraft.java:410) at asq.a(SourceFile:56) at net.minecraft.client.Minecraft.run(Minecraft.java:744) at java.lang.Thread.run(Thread.java:680) Caused by: java.lang.ClassNotFoundException: invtweaks.InvTweaksMod at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:185) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at cpw.mods.fml.common.ModClassLoader.loadClass(ModClassLoader.java:57) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:249) at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:418) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69) at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45) at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317) at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300) at com.google.common.eventbus.EventBus.post(EventBus.java:268) at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:153) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69) at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45) at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317) at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300) at com.google.common.eventbus.EventBus.post(EventBus.java:268) at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:86) at cpw.mods.fml.common.Loader.loadMods(Loader.java:494) ... 5 more Caused by: java.lang.UnsupportedClassVersionError: invtweaks/InvTweaksMod : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:174) ... 32 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- System Details -- Details: Minecraft Version: 1.4.7 Operating System: Mac OS X (x86_64) version 10.7.5 Java Version: 1.6.0_43, Apple Inc. Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc. Memory: 203148904 bytes (193 MB) / 266272768 bytes (253 MB) up to 1065025536 bytes (1015 MB) JVM Flags: 5 total; -Xms256M -Xmx1024M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+AggressiveOpts AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used Suspicious classes: FML and Forge are installed IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 FML: MCP v7.26a FML v4.7.32.553 Minecraft Forge 6.6.1.524 Feed The Beast Mod Pack 35 mods loaded, 35 mods active mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed FML [Forge Mod Loader] (coremods) Unloaded->Constructed Forge [Minecraft Forge] (coremods) Unloaded->Constructed CodeChickenCore [CodeChicken Core] (coremods) Unloaded->Constructed NotEnoughItems [Not Enough Items] (coremods) Unloaded->Constructed CoFHCore [CoFH Core] (CoFHCore.zip) Unloaded->Constructed inventorytweaks_forge [Inventory Tweaks (Forge)] (InvTweaks.jar) Unloaded->Errored mod_InvTweaks [Inventory Tweaks] (InvTweaks.zip) Unloaded->Constructed IronChest [Iron Chest] (IronChest.zip) Unloaded->Constructed StevesCarts [Steve's Carts] (StevesCarts.zip) Unloaded->Constructed BuildCraft|Core [BuildCraft] (buildcraft.jar) Unloaded->Constructed BuildCraft|Energy [BC Energy] (buildcraft.jar) Unloaded->Constructed ExtrabiomesXL [ExtrabiomesXL] (extrabiomes.jar) Unloaded->Constructed Forestry [Forestry for Minecraft] (forestry.jar) Unloaded->Constructed Thaumcraft [Thaumcraft] (Thaumcraft.zip) Unloaded->Constructed TwilightForest [The Twilight Forest] (TwilightForest.zip) Unloaded->Constructed XReliquary [Xeno's Reliquary] (XReliquary.jar) Unloaded->Constructed BuildCraft|Builders [BC Builders] (buildcraft.jar) Unloaded->Constructed BuildCraft|Factory [BC Factory] (buildcraft.jar) Unloaded->Constructed BuildCraft|Transport [BC Transport] (buildcraft.jar) Unloaded->Constructed BuildCraft|Silicon [BC Silicon] (buildcraft.jar) Unloaded->Constructed ChickenChunks [ChickenChunks] (chickenchunks.jar) Unloaded->Constructed EnderStorage [EnderStorage] (enderstorage.jar) Unloaded->Constructed Mystcraft [Mystcraft] (mystcraft.zip) Unloaded->Constructed NEIPlugins [NEI Plugins] (neiplugins.jar) Unloaded->Constructed ObsidiPlates [Obsidian Pressure Plates] (obsidiplates.zip) Unloaded->Constructed ThermalExpansion [Thermal Expansion] (thermalexpansion.zip) Unloaded->Constructed OmniTools [OmniTools] (omnitools.zip) Unloaded->Constructed Railcraft [Railcraft] (railcraft.jar) Unloaded->Constructed mod_ReiMinimap [mod_ReiMinimap] (reiminimap.zip) Unloaded->Constructed SecretRoomsMod [The SecretRoomsMod] (secretroomsmod.zip) Unloaded->Constructed SoulShards [SoulShards] (soulshards.zip) Unloaded->Constructed ThermalExpansion|Factory [Factory] (thermalexpansion.zip) Unloaded->Constructed ThermalExpansion|Energy [Energy] (thermalexpansion.zip) Unloaded->Constructed ThermalExpansion|Transport [Transport] (thermalexpansion.zip) Unloaded->Constructed LWJGL: 2.4.2 OpenGL: Intel HD Graphics 3000 OpenGL Engine GL version 2.1 APPLE-7.32.12, Intel Inc. Is Modded: Definitely; Client brand changed to 'forge,fml' Type: Client (map_client.txt) Texture Pack: Default Profiler Position: N/A (disabled) Vec3 Pool Size: ~~ERROR~~ NullPointerException: null