Fallo al intentar ejecutar Pixelmon

Buenas, he instalado el Forge 1.8.9, y tras instalarlo, he descargado el Pixelmon 1.8.9-4.2.7, pero al ejecutar me da error: He seguido todos los pasos, y el error para mi es chino… os lo adjunto por si los expertos en el tema saben qué falla… Muchas gracias 2016-06-15 19:52:23,109 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream 2016-06-15 19:52:23,109 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream [19:52:23] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker [19:52:23] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker [19:52:23] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker [19:52:23] [main/INFO] [FML]: Forge Mod Loader version 11.15.1.1722 for Minecraft 1.8.9 loading [19:52:23] [main/INFO] [FML]: Java is Java HotSpot™ Client VM, version 1.8.0_73, running on Windows XP:x86:5.1, installed at C:\Archivos de programa\Java\jre1.8.0_73 [19:52:23] [main/INFO] [FML]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.7.10_HD_U_A4.jar [19:52:24] [main/WARN] [FML]: The coremod chylex.javacheck.Java8CheckerCoremod does not have a MCVersion annotation, it may cause issues with this version of Minecraft [19:52:24] [main/WARN] [FML]: The coremod chylex.javacheck.Java8CheckerCoremod does not have a MCVersion annotation, it may cause issues with this version of Minecraft [19:52:24] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker [19:52:24] [main/INFO] [LaunchWrapper]: Loading tweak class name optifine.OptiFineForgeTweaker [19:52:24] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker [19:52:24] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker [19:52:24] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker [19:52:24] [main/INFO] [LaunchWrapper]: Calling tweak class optifine.OptiFineForgeTweaker [19:52:24] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:49]: OptiFineForgeTweaker: acceptOptions [19:52:24] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:49]: OptiFineForgeTweaker: injectIntoClassLoader [19:52:24] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:179]: OptiFine ClassTransformer [19:52:24] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:179]: OptiFine URL: file:/C:/Documents%20and%20Settings/Usuario/Datos%20de%20programa/.minecraft/mods/OptiFine_1.7.10_HD_U_A4.jar [19:52:24] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:179]: OptiFine ZIP file: java.util.zip.ZipFile@6279ee [19:52:24] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper [19:52:27] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc [19:52:27] [main/ERROR] [FML]: FML appears to be missing any signature data. This is not a good thing [19:52:27] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper [19:52:27] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper [19:52:28] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper [19:52:28] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker [19:52:28] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.TerminalTweaker [19:52:28] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.TerminalTweaker [19:52:28] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:49]: OptiFineForgeTweaker: getLaunchArguments [19:52:28] [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main} 2016-06-15 19:52:29,421 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream 2016-06-15 19:52:29,453 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream 2016-06-15 19:52:29,453 WARN Unable to instantiate org.fusesource.jansi.WindowsAnsiOutputStream [19:52:29] [Client thread/ERROR] [LaunchWrapper]: Unable to launch java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_73] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_73] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_73] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_73] 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.NoSuchMethodError: net.minecraft.client.resources.ResourceIndex.(Ljava/io/File;Ljava/lang/String;)V at net.minecraft.client.Minecraft.(Minecraft.java:299) ~[ave.class:?] at net.minecraft.client.main.Main.main(SourceFile:124) ~[Main.class:?] … 6 more Exception in thread “Client thread” [19:52:29] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: net.minecraftforge.fml.relauncher.FMLSecurityManager$ExitTrappedException [19:52:29] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraftforge.fml.relauncher.FMLSecurityManager.checkPermission(FMLSecurityManager.java:30) [19:52:29] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.SecurityManager.checkExit(Unknown Source) [19:52:29] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.Runtime.exit(Unknown Source) [19:52:29] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at java.lang.System.exit(Unknown Source) [19:52:29] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:138) [19:52:29] [Client thread/INFO] [STDERR]: [java.lang.ThreadGroup:uncaughtException:-1]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

Facil…
Es porque no eres premium y punto
O tu pc no es potente… Requisitos para jugar pixelmon correctamente: 8GB de Ram - Procesador DualCore 2.5