Jump to content
View in the app

A better way to browse. Learn more.
Forge Forums

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.
Please read the rules and FAQ before starting a new topic
Currently supported: All versions

Forge ModLoader Error

LeePuppy
in Support & Bug Reports

Featured Replies

Posted

After I install forge 6.0.1.349, I get the setting up the Minecraft environment pop-up and then it says Minecraft has been Validated and then I get a black screen. I followed the instructions from the wiki exactly and did not install any mods. Here is the ForgeModLoader.log

 

2012-10-30 21:43:44 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.2.8.424 for Minecraft 1.4.2 loading

2012-10-30 21:43:44 [FINEST] [ForgeModLoader] All core mods are successfully located

2012-10-30 21:43:44 [FINEST] [ForgeModLoader] Discovering coremods

2012-10-30 21:43:44 [iNFO] [sTDOUT] Downloading file: files.minecraftforge.net/fmllibs/argo-2.25.jar

2012-10-30 21:43:44 [iNFO] [sTDOUT] The libFile's path is C:\Documents and Settings\Jeremy\Application Data\.minecraft\lib\argo-2.25.jar

2012-10-30 21:43:44 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/argo-2.25.jar

2012-10-30 21:43:44 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/argo-2.25.jar

2012-10-30 21:43:44 [iNFO] [sTDOUT] Request: GET http://files.minecraftforge.net/fmllibs/argo-2.25.jar

2012-10-30 21:43:45 [iNFO] [sTDOUT] No handler. Piping.

2012-10-30 21:43:45 [iNFO] [sTDOUT] Piping finished, data size: 123642

2012-10-30 21:43:45 [FINEST] [ForgeModLoader] Download complete

2012-10-30 21:43:45 [iNFO] [ForgeModLoader] Download complete

2012-10-30 21:43:45 [FINEST] [ForgeModLoader] Library file argo-2.25.jar was downloaded and verified successfully

 

2012-10-30 21:43:45 [iNFO] [sTDOUT] Downloading file: files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2012-10-30 21:43:45 [iNFO] [sTDOUT] The libFile's path is C:\Documents and Settings\Jeremy\Application Data\.minecraft\lib\guava-12.0.1.jar

2012-10-30 21:43:45 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2012-10-30 21:43:45 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2012-10-30 21:43:45 [iNFO] [sTDOUT] Request: GET http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2012-10-30 21:43:45 [iNFO] [sTDOUT] No handler. Piping.

2012-10-30 21:43:46 [iNFO] [sTDOUT] Piping finished, data size: 1795932

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Download complete

2012-10-30 21:43:46 [iNFO] [ForgeModLoader] Download complete

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Library file guava-12.0.1.jar was downloaded and verified successfully

 

2012-10-30 21:43:46 [iNFO] [sTDOUT] Downloading file: files.minecraftforge.net/fmllibs/asm-all-4.0.jar

2012-10-30 21:43:46 [iNFO] [sTDOUT] The libFile's path is C:\Documents and Settings\Jeremy\Application Data\.minecraft\lib\asm-all-4.0.jar

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/asm-all-4.0.jar

2012-10-30 21:43:46 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/asm-all-4.0.jar

2012-10-30 21:43:46 [iNFO] [sTDOUT] Request: GET http://files.minecraftforge.net/fmllibs/asm-all-4.0.jar

2012-10-30 21:43:46 [iNFO] [sTDOUT] No handler. Piping.

2012-10-30 21:43:46 [iNFO] [sTDOUT] Piping finished, data size: 212767

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Download complete

2012-10-30 21:43:46 [iNFO] [ForgeModLoader] Download complete

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Library file asm-all-4.0.jar was downloaded and verified successfully

 

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Running coremod plugins

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Running coremod plugin FMLCorePlugin

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Coremod plugin FMLCorePlugin run successfully

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Running coremod plugin FMLForgePlugin

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Coremod plugin FMLForgePlugin run successfully

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Validating minecraft

2012-10-30 21:43:46 [FINEST] [ForgeModLoader] Minecraft validated, launching...

2012-10-30 21:43:46 [iNFO] [sTDERR] Exception in thread "Thread-10" java.lang.RuntimeException: cpw.mods.fml.relauncher.ReflectionHelper$UnableToFindClassException: java.lang.ClassNotFoundException: net.minecraft.Launcher

2012-10-30 21:43:46 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:269)

2012-10-30 21:43:46 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)

2012-10-30 21:43:46 [iNFO] [sTDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:28)

2012-10-30 21:43:46 [iNFO] [sTDERR] at net.minecraft.Launcher.replace(Launcher.java:136)

2012-10-30 21:43:46 [iNFO] [sTDERR] at net.minecraft.Launcher$1.run(Launcher.java:79)

2012-10-30 21:43:46 [iNFO] [sTDERR] Caused by: cpw.mods.fml.relauncher.ReflectionHelper$UnableToFindClassException: java.lang.ClassNotFoundException: net.minecraft.Launcher

2012-10-30 21:43:46 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.ReflectionHelper.getClass(ReflectionHelper.java:159)

2012-10-30 21:43:46 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:254)

2012-10-30 21:43:46 [iNFO] [sTDERR] ... 4 more

2012-10-30 21:43:46 [iNFO] [sTDERR] Caused by: java.lang.ClassNotFoundException: net.minecraft.Launcher

2012-10-30 21:43:46 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(Unknown Source)

2012-10-30 21:43:46 [iNFO] [sTDERR] at java.net.URLClassLoader$1.run(Unknown Source)

2012-10-30 21:43:46 [iNFO] [sTDERR] at java.security.AccessController.doPrivileged(Native Method)

2012-10-30 21:43:46 [iNFO] [sTDERR] at java.net.URLClassLoader.findClass(Unknown Source)

2012-10-30 21:43:46 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)

2012-10-30 21:43:46 [iNFO] [sTDERR] at java.lang.ClassLoader.loadClass(Unknown Source)

2012-10-30 21:43:46 [iNFO] [sTDERR] at java.lang.Class.forName0(Native Method)

2012-10-30 21:43:46 [iNFO] [sTDERR] at java.lang.Class.forName(Unknown Source)

2012-10-30 21:43:46 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.ReflectionHelper.getClass(ReflectionHelper.java:151)

2012-10-30 21:43:46 [iNFO] [sTDERR] ... 5 more

 

  • Quote
    • Author

    I have also got this error when I installed forge on 1.3.2. Someone please help me.

  • Quote

    1. Wrong sub-forum (someone moved the topic)

    2. read this: http://www.minecraftforge.net/forum/index.php/topic,2429.0.html

    Don't ask for support per PM! They'll get ignored! | If a post helped you, click the "Thank You" button at the top right corner of said post! |

    mah twitter

    This thread makes me sad because people just post copy-paste-ready code when it's obvious that the OP has little to no programming experience. This is not how learning works.

  • Quote

    • Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.
    Note: Your post will require moderator approval before it will be visible.

    Guest
    Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
    Reply to this topic...
    https://forums.minecraftforge.net/topic/3026-forge-modloader-error/
    Go to topic listing

    Important Information

    By using this site, you agree to our Terms of Use.

    I accept

    Configure browser push notifications
    Chrome (Android)
    1. Tap the lock icon next to the address bar.
    2. Tap Permissions → Notifications.
    3. Adjust your preference.
    Chrome (Desktop)
    1. Click the padlock icon in the address bar.
    2. Select Site settings.
    3. Find Notifications and adjust your preference.