java.lang.NoClassDefFoundError

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    • 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:552)[forge-1.11-13.19.1.2188.jar:?] at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:423)[forge-1.11-13.19.1.2188.jar:?] at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:253)[forge-1.11-13.19.1.2188.jar:?] at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:102)[forge-1.11-13.19.1.2188.jar:?] at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:79)[forge-1.11-13.19.1.2188.jar:?] at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:41)[forge-1.11-13.19.1.2188.jar:?] at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:138)[forge-1.11-13.19.1.2188.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:?] ... 25 more

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