Getting black screen on start up, I've downloaded clean versions of the jars several times, and I've cleaned up most of the Minecraft directory of unnecessary files.

 

Log file:

 

2012-10-27 17:07:43 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.2.6.422 for Minecraft 1.4.2 loading

2012-10-27 17:07:43 [FINEST] [ForgeModLoader] All core mods are successfully located

2012-10-27 17:07:43 [FINEST] [ForgeModLoader] Discovering coremods

2012-10-27 17:07:44 [FINEST] [ForgeModLoader] Found library file argo-2.25.jar present and correct in lib dir

 

2012-10-27 17:07:44 [FINEST] [ForgeModLoader] Found library file guava-12.0.1.jar present and correct in lib dir

 

2012-10-27 17:07:44 [FINEST] [ForgeModLoader] Found library file asm-all-4.0.jar present and correct in lib dir

 

2012-10-27 17:07:44 [FINEST] [ForgeModLoader] Running coremod plugins

2012-10-27 17:07:44 [FINEST] [ForgeModLoader] Running coremod plugin FMLCorePlugin

2012-10-27 17:07:44 [FINEST] [ForgeModLoader] Coremod plugin FMLCorePlugin run successfully

2012-10-27 17:07:44 [FINEST] [ForgeModLoader] Running coremod plugin FMLForgePlugin

2012-10-27 17:07:44 [FINEST] [ForgeModLoader] Coremod plugin FMLForgePlugin run successfully

2012-10-27 17:07:44 [FINEST] [ForgeModLoader] Validating minecraft

2012-10-27 17:07:44 [FINEST] [ForgeModLoader] Minecraft validated, launching...

2012-10-27 17:07:46 [iNFO] [sTDOUT] 27 achievements

2012-10-27 17:07:46 [iNFO] [sTDOUT] 208 recipes

2012-10-27 17:07:46 [iNFO] [sTDOUT] Setting user: Billyboi456, cb7a128358d468f7c85ff74297059e7cc0832156

2012-10-27 17:07:46 [iNFO] [sTDERR] Client asked for parameter: server

2012-10-27 17:07:46 [iNFO] [sTDOUT] LWJGL Version: 2.4.2

2012-10-27 17:07:47 [iNFO] [sTDERR] Exception in thread "Minecraft main thread" java.lang.NoSuchFieldError: ofCustomFonts

2012-10-27 17:07:47 [iNFO] [sTDERR] at asb.getFontTexturePack(FontRenderer.java:285)

2012-10-27 17:07:47 [iNFO] [sTDERR] at asb.init(FontRenderer.java:135)

2012-10-27 17:07:47 [iNFO] [sTDERR] at asb.<init>(FontRenderer.java:118)

2012-10-27 17:07:47 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.a(Minecraft.java:418)

2012-10-27 17:07:47 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.run(Minecraft.java:752)

2012-10-27 17:07:47 [iNFO] [sTDERR] at java.lang.Thread.run(Unknown Source)

2012-10-27 17:08:01 [iNFO] [sTDERR] Someone is closing me!

 

Ok, just realized that Optifine is compatible with Forge #337 and not #339. Problem fixed.

#339 and Optifine (U_A7) work for me.

Really? It wouldn't work for me, Magic Launcher says its not compatible when I load it with Optifine, and I get the black screen.

Optifine should be at the bottom of the list.

Oh sweet that worked, thanks!

I get this log on magic launcher:

 

*** MagicMinecraftLauncher 1.0.0 ***

Disable inactive mods

Disabled: CameraStudioV2.3(1.3.2).zip

Disabled: mFC.zip

Disabled: TFCraft-Universal-Core-B2-Build52e.zip

Disabled: Explosives+ v3.9 PreRelease 4.jar

Disabled: SoundPacksMod V2.0.jar

Disabled: ElementalCreepers_v2.5_forge_MC1.3.2.zip

Disabled: mods.zip

2012-10-28 09:32:20 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.2.6.422 for Minecraft 1.4.2 loading

2012-10-28 09:32:22 [iNFO] [sTDOUT] 27 achievements

2012-10-28 09:32:22 [iNFO] [sTDOUT] 208 recipes

2012-10-28 09:32:22 [iNFO] [sTDOUT] Setting user: [email protected], 195080163

2012-10-28 09:32:22 [iNFO] [sTDERR] Client asked for parameter: server

2012-10-28 09:32:22 [iNFO] [sTDOUT] LWJGL Version: 2.4.2

2012-10-28 09:32:23 [iNFO] [sTDOUT] OptiFine_1.4.2_HD_U_A7

2012-10-28 09:32:23 [iNFO] [sTDOUT] Sun Oct 28 09:32:23 COT 2012

2012-10-28 09:32:23 [iNFO] [sTDOUT] OS: Windows 7 (amd64) version 6.1

2012-10-28 09:32:23 [iNFO] [sTDOUT] Java: 1.7.0_05, Oracle Corporation

2012-10-28 09:32:23 [iNFO] [sTDOUT] VM: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

2012-10-28 09:32:23 [iNFO] [sTDOUT] LWJGL: 2.4.2

2012-10-28 09:32:23 [iNFO] [sTDOUT] OpenGL: GeForce 9400/PCI/SSE2 version 3.3.0, NVIDIA Corporation

2012-10-28 09:32:23 [iNFO] [sTDOUT] OpenGL Version: 3.3

2012-10-28 09:32:23 [iNFO] [sTDOUT] Checking for new version

2012-10-28 09:32:24 [iNFO] [sTDOUT] Version found: A7

2012-10-28 09:32:24 [iNFO] [sTDOUT] setupTexture: "/title/mojang.png", id: 1

2012-10-28 09:32:24 [iNFO] [ForgeModLoader] Attempting early MinecraftForge initialization

2012-10-28 09:32:24 [iNFO] [sTDOUT] MinecraftForge v6.0.1.341 Initialized

2012-10-28 09:32:24 [iNFO] [ForgeModLoader] MinecraftForge v6.0.1.341 Initialized

2012-10-28 09:32:24 [iNFO] [ForgeModLoader] Completed early MinecraftForge initialization

2012-10-28 09:32:24 [iNFO] [ForgeModLoader] Forge Mod Loader has detected optifine OptiFine_1.4.2_HD_U_A7, enabling compatibility features

2012-10-28 09:32:24 [iNFO] [ForgeModLoader] Searching C:\Users\Diego Granada\AppData\Roaming\.minecraft\mods for mods

2012-10-28 09:32:25 [iNFO] [ForgeModLoader] Forge Mod Loader has identified 4 mods to load

2012-10-28 09:32:25 [iNFO] [ForgeModLoader] Configured a dormant chunk cache size of 0

2012-10-28 09:32:26 [iNFO] [sTDERR] Exception in thread "Minecraft main thread" java.lang.NoSuchMethodError: ix.a(Liz;)Lix;

2012-10-28 09:32:26 [iNFO] [sTDERR]    at net.minecraft.client.Minecraft.a(Minecraft.java:434)

2012-10-28 09:32:26 [iNFO] [sTDERR]    at net.minecraft.client.Minecraft.run(Minecraft.java:752)

2012-10-28 09:32:26 [iNFO] [sTDERR]    at java.lang.Thread.run(Unknown Source)

 

You've installed 1.4.2 on a 1.3.2 jar.