Completely new to modding, need help making forge work

[baconandcider 0]

I tried installing forge for minecraft on my mac, following instructions from a youtube video exactly and it didn't work. Minecraft freezes on the done loading screen. When looking up this error I found magiclauncher, which I am currently trying to make work. It says there is 1 error in forge and when I check the log it says this:

 

 

MagicLauncher 1.0.0

java.home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home

java.runtime.name: Java SE Runtime Environment

java.runtime.version: 1.6.0_43-b01-447-10M4203

os.name: Mac OS X

os.version: 10.6.8

os.arch: i386

sun.arch.data.model: 32

Missing class member: public B c, class: ajf, mod: minecraftforge-universal-1.5-7.7.0.583.zip

 

*** Starting Minecraft ***

Minecraft version: 1.5

Minecraft.jar: minecraft.jar

Mods:

  minecraftforge-universal-1.5-7.7.0.583.zip

  BiblioCraft[v1.1.3].zip

  NotEnoughItems 1.5.2.2.jar

Java path: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/bin/java

Memory: 512 MB

LauncherPath: /Users/Ric/Downloads/MagicLauncher.app/Contents/Resources/Java/MagicLauncher.jar

LauncherPath: /Users/Ric/Downloads/

*** MagicMinecraftLauncher 1.0.0 ***

java.lang.UnsupportedClassVersionError: ayf : 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 java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

    at java.net.URLClassLoader.access$000(URLClassLoader.java:58)

    at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

    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)

    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 java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

    at java.net.URLClassLoader.access$000(URLClassLoader.java:58)

    at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

    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)

    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 java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

    at java.net.URLClassLoader.access$000(URLClassLoader.java:58)

    at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

    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)

    at java.lang.Class.getDeclaredMethods0(Native Method)

    at java.lang.Class.privateGetDeclaredMethods(Class.java:2436)

    at java.lang.Class.getMethod0(Class.java:2679)

    at java.lang.Class.getMethod(Class.java:1605)

    at magic.launcher.Launcher.main(Unknown Source)

 

 

 

I have literally no idea what any of that means so any help would be appreciated

 

(I have the latest version of Minecraft and of forge)

[HMPerson1 42]

Update Java. Before you say anything about Java 7 being not available for Mac:

Look here.

[LexManos 1622]

One of your mods is compiling for java 7.. why?

Forge ships against java 6.

[baconandcider 0]

Update Java. Before you say anything about Java 7 being not available for Mac:

Look here.

 

I'm using Snow Leopard so I can't get Java 7. I followed your link but the installer still said I needed Lion.

 

One of your mods is compiling for java 7.. why?

Forge ships against java 6.

 

I really have no idea what that means or what to do about it, sorry. Can you please explain?

[luacs1998 270]

What did you install into your minecraft jar?

Oh, and look in Software Update.

[baconandcider 0]

What did you install into your minecraft jar?

Oh, and look in Software Update.

 

At the moment my minecraft.jar is completely clean because forge made it not load so I re-downloaded it.

I looked it Software Update, nothing Java or Minecraft related.

[HMPerson1 42]

Software Update never has had, and probably never will have an update to Java.

Apparently Oracle made Java 7 updates only available to OS X 10.7.3 (Lion). Go yell at the author of whatever mod you installed not to use Java 7 then.

 

[spoiler=More Info]According to this, as of Java 7u6 only OS X 10.7.3+ is supported. Java 7u5 should work on OS X 10.6.8+. However, older archived versions of Java are unavailable for download to the public. So...blame the mod author.