Minecraft FTB CLASS problem

AnalyticsBackgroundThread started
FTBLaunch starting up (version 1.2.2)
Java version: 1.7.0_17
Java vendor: Oracle Corporation
Java home: C:\Program Files\Java\jre7
Java specification: Java Virtual Machine Specification version: 1.7 by Oracle Corporation
Java vm: Java HotSpot(TM) Client VM version: 23.7-b01 by Oracle Corporation
OS: x86 Windows 7 6.1
[i18n] Checking for updates ...
[i18n] enUS English language file loaded!
[i18n] Added 0 enUS to options pane
[i18n] enUS English language file loaded!
[i18n] remoteVer = 10
[i18n] localVer = 10
[i18n] Files are up to date
[i18n] Fallback enUS loaded
Loading modpack information for modpacks.xml...
Adding pack 1
Adding pack 2
Adding pack 3
Adding pack 4
Adding pack 5
Adding pack 6
Adding pack 7
Adding pack 8
Adding pack 9
Adding pack 10
Adding pack 11
Adding pack 12
Adding pack 13
Adding pack 14
Adding pack 15
Adding pack 16
Loading modpack information for plcbeta.xml...
Adding pack 17
loading map information...
loading texture pack information...
Adding map 1
Adding map 2
Adding map 3
Adding map 4
Adding map 5
Adding map 6
Adding map 7
Adding map 8
Adding map 9
Adding texture pack 1
Adding texture pack 2
Adding texture pack 3
Logging in...
Login complete.
Ultimate
Modpack is up to date.
dirs mk'd
Unexpected end of ZLIB input stream: java.io.EOFException: Unexpected end of ZLIB input stream
Setting MinMemory to 256
Setting MaxMemory to 1024
Loading jars...
Loading URL: file:/C:/Users/username/Desktop/Minecraft/FTBClients/Ultimate/instMods/liteloader.zip
Loading URL: file:/C:/Users/username/Desktop/Minecraft/FTBClients/Ultimate/instMods/MinecraftForge.zip
Loading URL: file:/C:/Users/username/Desktop/Minecraft/FTBClients/Ultimate/minecraft/bin/minecraft.jar
Loading URL: file:/C:/Users/username/Desktop/Minecraft/FTBClients/Ultimate/minecraft/bin/lwjgl.jar
Loading URL: file:/C:/Users/username/Desktop/Minecraft/FTBClients/Ultimate/minecraft/bin/lwjgl_util.jar
Loading URL: file:/C:/Users/username/Desktop/Minecraft/FTBClients/Ultimate/minecraft/bin/jinput.jar
Loading natives...
Natives loaded...
Loading minecraft class
Exception in thread "main" java.lang.NoClassDefFoundError: lg
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at net.ftb.mclauncher.MinecraftLauncher.main(MinecraftLauncher.java:180)
Caused by: java.lang.ClassNotFoundException: lg
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 14 more