Forge Magic Launcher Black Screen

I am using Magic Launcher and I'm trying to load forge with it but it says 1Error, and I keep getting a black screen and this error log:

*** MagicMinecraftLauncher 1.1.5 ***

  LCP: /Users/johncosta/Desktop/quicksand mod.zip;/Users/johncosta/Desktop/forge.zip;/Users/johncosta/Library/Application Support/minecraft/bin/minecraft.jar;bin/jinput.jar;bin/lwjgl.jar;bin/lwjgl_util.jar

  MainClass: net.minecraft.client.Minecraft

Restoring disabled mods: mods

Disable inactive mods: mods

Restoring disabled mods: coremods

Disable inactive mods: coremods

java.lang.reflect.InvocationTargetException

    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 magic.launcher.Launcher.main(Unknown Source)

Caused by: java.lang.NoClassDefFoundError: net/minecraftforge/client/event/sound/SoundResultEvent

    at net.minecraft.client.Minecraft.<init>(SourceFile:111)

    at avv.<init>(SourceFile:38)

    at net.minecraft.client.MinecraftApplet.init(SourceFile:38)

    at net.minecraft.client.Minecraft.main(SourceFile:1672)

    ... 5 more

Caused by: java.lang.ClassNotFoundException: net.minecraftforge.client.event.sound.SoundResultEvent

    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)

    at java.security.AccessController.doPrivileged(Native Method)

    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

    ... 9 more

Can someone please help make sense of what this means and what I need to do to fix it?