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

Game crashes on startup

halppls
in Support & Bug Reports

Featured Replies

Posted

[16:15:02] [main/INFO]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[16:15:02] [main/INFO]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[16:15:02] [main/INFO]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker
[16:15:02] [main/INFO]: Forge Mod Loader version 12.18.0.2000 for Minecraft 1.10 loading
[16:15:02] [main/INFO]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_144, running on Windows 10:amd64:10.0, installed at C:\Program Files\Java\jre1.8.0_144
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.lang.ClassLoader.defineClass1(Native Method)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.lang.ClassLoader.defineClass(Unknown Source)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.security.SecureClassLoader.defineClass(Unknown Source)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.net.URLClassLoader.defineClass(Unknown Source)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.net.URLClassLoader.access$100(Unknown Source)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.net.URLClassLoader$1.run(Unknown Source)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.net.URLClassLoader$1.run(Unknown Source)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.security.AccessController.doPrivileged(Native Method)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.net.URLClassLoader.findClass(Unknown Source)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.lang.ClassLoader.loadClass(Unknown Source)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.lang.ClassLoader.loadClass(Unknown Source)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.lang.Class.forName0(Native Method)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at java.lang.Class.forName(Unknown Source)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:543)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:423)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:253)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:102)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:79)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:41)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:138)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]:     at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]: Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]:     at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]:     at java.lang.ClassLoader.loadClass(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]:     at java.lang.ClassLoader.loadClass(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]:     ... 23 more
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]: Caused by: java.lang.NullPointerException
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]:     at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]:     ... 25 more
[16:15:02] [main/ERROR]: An error occurred trying to configure the minecraft home at C:\Users\Shane1\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_144]
    at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.8.0_144]
    at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.8.0_144]
    at java.net.URLClassLoader.defineClass(Unknown Source) ~[?:1.8.0_144]
    at java.net.URLClassLoader.access$100(Unknown Source) ~[?:1.8.0_144]
    at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_144]
    at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.8.0_144]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_144]
    at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_144]
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117) ~[launchwrapper-1.12.jar:?]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_144]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_144]
    at java.lang.Class.forName0(Native Method) ~[?:1.8.0_144]
    at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_144]
    at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:543) ~[forge-1.10-12.18.0.2000-1.10.0.jar:?]
    at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:423) ~[forge-1.10-12.18.0.2000-1.10.0.jar:?]
    at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:253) ~[forge-1.10-12.18.0.2000-1.10.0.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:102) [forge-1.10-12.18.0.2000-1.10.0.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:79) [forge-1.10-12.18.0.2000-1.10.0.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:41) [forge-1.10-12.18.0.2000-1.10.0.jar:?]
    at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:138) [forge-1.10-12.18.0.2000-1.10.0.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(Unknown Source) ~[?:1.8.0_144]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_144]
    ... 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(Unknown Source) ~[?:1.8.0_144]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_144]
    ... 23 more
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.ClassLoader.defineClass1(Native Method)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.ClassLoader.defineClass(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.security.SecureClassLoader.defineClass(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.net.URLClassLoader.defineClass(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.net.URLClassLoader.access$100(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.net.URLClassLoader$1.run(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.net.URLClassLoader$1.run(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.security.AccessController.doPrivileged(Native Method)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.net.URLClassLoader.findClass(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.ClassLoader.loadClass(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.ClassLoader.loadClass(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.Class.forName0(Native Method)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.Class.forName(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:543)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:423)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:253)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:102)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:79)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:41)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:138)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]: Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.ClassLoader.loadClass(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     at java.lang.ClassLoader.loadClass(Unknown Source)
[16:15:02] [main/INFO]: [java.lang.ThreadGroup:uncaughtException:-1]:     ... 23 more
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]: Caused by: java.lang.NullPointerException
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]:     at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[16:15:02] [main/INFO]: [java.lang.Throwable:printStackTrace:-1]:     ... 25 more
 

please help

  • Quote
    5 minutes ago, halppls said:

    [16:15:02] [main/INFO]: Forge Mod Loader version 12.18.0.2000 for Minecraft 1.10 loading
    ...
    [16:15:02] [main/INFO]: [net.minecraftforge.fml.relauncher.FMLLaunchHandler:setupHome:106]: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin

     

    You're running 1.10, but you've installed a coremod that was built for 1.7.10 or earlier.

     

    Why are you using 1.10? Ideally you should update to 1.12.2, but failing that at least use 1.10.2. There's no reason not to use the latest bugfix release within a major version.

    Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

  • Quote
    • Author

    Just updated to 1.10.2 and had the same thing happen and the reason im not using 1.12.2 is that not all the mods i have are updated to 1.12.2

  • Quote
    • Author

    I know which mods i have installed however this happens everytime i try and add any of the mods

  • 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/62556-game-crashes-on-startup/
    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.