After installing Forge, the FML downloading thing shows up then disappears leaving me with a black screen.

 

Info:

Minecraft Version: 1.4.2

Forge Version: Universal Build 6.0.1.349

Mods: None

 

Error in Forge log:

2012-11-09 19:45:23 [FINEST] [ForgeModLoader] Running coremod plugins

2012-11-09 19:45:23 [FINEST] [ForgeModLoader] Running coremod plugin FMLCorePlugin

2012-11-09 19:45:23 [FINEST] [ForgeModLoader] Coremod plugin FMLCorePlugin run successfully

2012-11-09 19:45:23 [FINEST] [ForgeModLoader] Running coremod plugin FMLForgePlugin

2012-11-09 19:45:23 [FINEST] [ForgeModLoader] Coremod plugin FMLForgePlugin run successfully

2012-11-09 19:45:23 [FINEST] [ForgeModLoader] Validating minecraft

2012-11-09 19:45:23 [FINEST] [ForgeModLoader] Minecraft validated, launching...

2012-11-09 19:45:23 [iNFO] [sTDERR] Exception in thread "Thread-11" java.lang.RuntimeException: cpw.mods.fml.relauncher.ReflectionHelper$UnableToFindClassException: java.lang.ClassNotFoundException: net.minecraft.Launcher

2012-11-09 19:45:23 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:269)

2012-11-09 19:45:23 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)

2012-11-09 19:45:23 [iNFO] [sTDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:28)

2012-11-09 19:45:23 [iNFO] [sTDERR] at net.minecraft.Launcher.replace(Launcher.java:136)

2012-11-09 19:45:23 [iNFO] [sTDERR] at net.minecraft.Launcher$1.run(Launcher.java:79)

2012-11-09 19:45:23 [iNFO] [sTDERR] Caused by: cpw.mods.fml.relauncher.ReflectionHelper$UnableToFindClassException: java.lang.ClassNotFoundException: net.minecraft.Launcher

2012-11-09 19:45:23 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.ReflectionHelper.getClass(ReflectionHelper.java:159)

2012-11-09 19:45:23 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:254)

2012-11-09 19:45:23 [iNFO] [sTDERR] ... 4 more

2012-11-09 19:45:23 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: net.minecraft.Launcher

2012-11-09 19:45:23 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(Unknown Source)

2012-11-09 19:45:23 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(Unknown Source)

2012-11-09 19:45:23 [iNFO] [sTDERR] at java.security.AccessController.doPrivileged(Native Method)

2012-11-09 19:45:23 [iNFO] [sTDERR] at java.net.URLClassLoader.findClass(Unknown Source)

2012-11-09 19:45:23 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)

2012-11-09 19:45:23 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)

2012-11-09 19:45:23 [iNFO] [sTDERR] at java.lang.Class.forName0(Native Method)

2012-11-09 19:45:23 [iNFO] [sTDERR] at java.lang.Class.forName(Unknown Source)

2012-11-09 19:45:23 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.ReflectionHelper.getClass(ReflectionHelper.java:151)

2012-11-09 19:45:23 [iNFO] [sTDERR] ... 5 more

 

 

 

Modloader.txt did not show up.

     

          ~Sypher

java.lang.ClassNotFoundException: net.minecraft.Launcher

Read the EAQ.

I did, I use the vanilla launcher. Going to try Multi-MC.

Okay, after running Multi-MC and importing my normal folder, everything runs fine.