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I'm Brazilian, I apologize for any errors in the google translator is not so good "-.-

I've got this error on my minecraft, n know what is the cause, then n know a solution. I thank you for understanding.

[10:56:40] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[10:56:41] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[10:56:41] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[10:56:41] [main/INFO] [FML]: Forge Mod Loader version 7.99.36.1558 for Minecraft 1.7.10 loading
[10:56:41] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.7.0_71, running on Windows 7:amd64:6.1, installed at C:\Program Files\Java\jre7
[10:56:41] [main/INFO] [FML]: [AppEng] Core Init
[10:56:41] [main/WARN] [FML]: The coremod codechicken.core.launch.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[10:56:43] [main/WARN] [FML]: The coremod codechicken.core.launch.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[10:56:43] [main/WARN] [FML]: The coremod cofh.asm.LoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[10:56:43] [main/WARN] [FML]: The coremod cofh.asm.LoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[10:56:43] [main/WARN] [FML]: The coremod invtweaks.forge.asm.FMLPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[10:56:44] [main/WARN] [FML]: The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[10:56:44] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[10:56:44] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[10:56:44] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[10:56:44] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[10:56:44] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:56:47] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
[10:56:47] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[10:56:47] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:56:47] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:56:47] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:56:47] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:56:47] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:56:47] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:56:47] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:56:48] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLDeobfTweaker
[10:56:51] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:56:51] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[10:56:51] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.TerminalTweaker
[10:56:51] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.TerminalTweaker
[10:56:51] [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main}
[10:56:53] [main/ERROR] [LaunchWrapper]: Unable to launch
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_71]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_71]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_71]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_71]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/world/World
at net.minecraft.client.main.Main.main(SourceFile:72) ~[Main.class:?]
... 6 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.world.World
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
at net.minecraft.client.main.Main.main(SourceFile:72) ~[Main.class:?]
... 6 more
Caused by: java.lang.ClassFormatError: Duplicate field name&signature in class file net/minecraft/world/World
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.7.0_71]
at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.7.0_71]
at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.7.0_71]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_71]
at net.minecraft.client.main.Main.main(SourceFile:72) ~[Main.class:?]
... 6 more
Exception in thread "main" [10:56:53] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: cpw.mods.fml.relauncher.FMLSecurityManager$ExitTrappedException
[10:56:53] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at cpw.mods.fml.relauncher.FMLSecurityManager.checkPermission(FMLSecurityManager.java:25)
[10:56:53] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.SecurityManager.checkExit(Unknown Source)
[10:56:53] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.Runtime.exit(Unknown Source)
[10:56:53] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.System.exit(Unknown Source)
[10:56:53] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:138)
[10:56:53] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

Quote from ChaosTheDude»

Probably duplicate mods.

No, there is no information as to which it is. Go through your mods folder and remove any duplicates.