Forge 1.8 Not Working Properly - Java Edition Support - Support - Minecraft Forum

#1 Nov 21, 2015

lightbulbwindows1000

Void Walker
Join Date: 6/19/2012
Posts: 1,784
Minecraft: BlueAmbulance
Member Details

Lately, I've gotten an issue when trying to use Forge 1.8 (specifically Forge 11.14.4.1563). I download the installer, open it, and it all runs well, but when I use the profile it creates, it instantly crashes. In the game output, it gives me this log:

[11:54:15] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[11:54:15] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[11:54:15] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker
[11:54:15] [main/INFO] [FML]: Forge Mod Loader version 11.14.4.1572 for Minecraft 1.8 loading
[11:54:15] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_25, running on Windows 8.1:amd64:6.3, installed at C:\Program Files (x86)\Minecraft\runtime\jre-x64\1.8.0_25
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass1(Native Method)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.AccessController.doPrivileged(Native Method)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName0(Native Method)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName(Class.java:344)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:485)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:409)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:241)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:95)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:72)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:119)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 23 more
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.NullPointerException
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[11:54:15] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 25 more
[11:54:15] [main/ERROR] [FML]: An error occurred trying to configure the minecraft home at C:\Users\shawnleaver\AppData\Roaming\.minecraft for Forge Mod Loader
java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_25]
at java.lang.ClassLoader.defineClass(ClassLoader.java:760) ~[?:1.8.0_25]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.8.0_25]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:455) ~[?:1.8.0_25]
at java.net.URLClassLoader.access$100(URLClassLoader.java:73) ~[?:1.8.0_25]
at java.net.URLClassLoader$1.run(URLClassLoader.java:367) ~[?:1.8.0_25]
at java.net.URLClassLoader$1.run(URLClassLoader.java:361) ~[?:1.8.0_25]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_25]
at java.net.URLClassLoader.findClass(URLClassLoader.java:360) ~[?:1.8.0_25]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_25]
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25]
at java.lang.Class.forName(Class.java:344) ~[?:1.8.0_25]
at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:485) ~[forge-1.8-11.14.4.1572.jar:?]
at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:409) ~[forge-1.8-11.14.4.1572.jar:?]
at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:241) ~[forge-1.8-11.14.4.1572.jar:?]
at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:95) [forge-1.8-11.14.4.1572.jar:?]
at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:72) [forge-1.8-11.14.4.1572.jar:?]
at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34) [forge-1.8-11.14.4.1572.jar:?]
at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:119) [forge-1.8-11.14.4.1572.jar:?]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_25]
... 23 more
Caused by: java.lang.NullPointerException
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_25]
... 23 more
Exception in thread "main" [11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass1(Native Method)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.AccessController.doPrivileged(Native Method)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName0(Native Method)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName(Class.java:344)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:485)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:409)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:241)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:95)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:72)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:119)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 23 more
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.NullPointerException
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[11:54:16] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 25 more

Any way to fix this?

#2 Nov 21, 2015

ChaosTheDude

Curse Premium

IRC HACKER
Join Date: 8/20/2015
Posts: 1,374
Minecraft: ChaosTheDude
Member Details

Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin

1.7.10 mod(s) installed.

Realistic Torches - Causes torches to burn out after a configurable amount of time.

Nature's Compass - A utility item that allows you to search for any biome's location in the world.

Notes - Provides a clientside in-game notepad.

Souls - After you die, a hostile Soul that stores your inventory will spawn.

Auto Refresh - Automatically refreshes your server list and alerts you when your selected server comes online.

Pick Block Plus - A clientside mod that significantly improves the vanilla pick block function.

^{And a few others that we don't talk about.}