Alright whenever I try to run the new client it gets to to where it asks me for my log in info and i put it in and it seems to accept it . Then nothing happens. In the black box thing I get this

Autodetecting java
Testing default folder
Checking E:\Program Files\Java\jre6 folder
Found java in E:\Program Files\Java\jre6 folder
Starting java from "E:\Program Files\Java\jre6\bin\java.exe"
Exception in thread "main" java.lang.NoClassDefFoundError: com/mojang/minecraft/
l
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
        at java.lang.Class.getDeclaredMethod(Unknown Source)
        at java.awt.Component.isCoalesceEventsOverriden(Unknown Source)
        at java.awt.Component.access$500(Unknown Source)
        at java.awt.Component$3.run(Unknown Source)
        at java.awt.Component$3.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.awt.Component.checkCoalescing(Unknown Source)
        at java.awt.Component.<init>(Unknown Source)
        at java.awt.Container.<init>(Unknown Source)
        at java.awt.Panel.<init>(Unknown Source)
        at java.awt.Panel.<init>(Unknown Source)
        at java.applet.Applet.<init>(Unknown Source)
        at com.mojang.minecraft.MinecraftApplet.<init>(Unknown Source)
        at MainApplet.<init>(MainApplet.java:22)
        at Main.main(Main.java:92)
Caused by: java.lang.ClassNotFoundException: com.mojang.minecraft.l
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClassInternal(Unknown Source)
        ... 17 more
Please help I have the .jar file in lib and everything.