Hello.

 

I have the latest version of Forge (1.6.4-9.11.0.891). I'am was trying to correctly install Forge via MagicLauncher.

The status in MagicLauncher is "OK". So, when i'm trying to start Minecraft, It's start correctly, but it's nothing display from Forge. In the Logs from MagicLauncher it's this:

 

java.lang.IllegalAccessError: tried to access field yn.c from class net.minecraftforge.common.ForgeHooks
    at net.minecraftforge.common.ForgeHooks.initTools(ForgeHooks.java:195)
    at net.minecraftforge.common.ForgeHooks.<clinit>(ForgeHooks.java:250)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at ReflectorClass.getTargetClass(ReflectorClass.java:37)
    at ReflectorClass.<init>(ReflectorClass.java:17)
    at Reflector.<clinit>(Reflector.java:42)
    at aul.b(GameSettings.java:2370)
    at bln.i(SourceFile:112)
    at bln.a(SourceFile:69)
    at bjw.a(SourceFile:94)
    at atv.O(SourceFile:324)
    at atv.d(SourceFile:599)
    at net.minecraft.client.main.Main.main(SourceFile:101)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at magic.launcher.Launcher.main(Unknown Source)
java.lang.NoClassDefFoundError: net/minecraft/launchwrapper/LaunchClassLoader
    at cpw.mods.fml.common.ModClassLoader.<init>(ModClassLoader.java:46)
    at cpw.mods.fml.common.Loader.<init>(Loader.java:183)
    at cpw.mods.fml.common.Loader.instance(Loader.java:163)
    at cpw.mods.fml.common.FMLCommonHandler.<init>(FMLCommonHandler.java:90)
    at cpw.mods.fml.common.FMLCommonHandler.<clinit>(FMLCommonHandler.java:79)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at ReflectorClass.getTargetClass(ReflectorClass.java:37)
    at ReflectorClass.<init>(ReflectorClass.java:17)
    at Reflector.<clinit>(Reflector.java:64)
    at aul.b(GameSettings.java:2370)
    at bln.i(SourceFile:112)
    at bln.a(SourceFile:69)
    at bjw.a(SourceFile:94)
    at atv.O(SourceFile:324)
    at atv.d(SourceFile:599)
    at net.minecraft.client.main.Main.main(SourceFile:101)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at magic.launcher.Launcher.main(Unknown Source)
Caused by: java.lang.ClassNotFoundException: net.minecraft.launchwrapper.LaunchClassLoader
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 22 more

 

What's is wrong?

I'm using the Latest Version of Forge and Minecraft

 

^{Sorry for my english, i'm from poland}

Run modded minecraft through the mojang launcher at least once.