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Samebug tips

  1. ,
    Expert tip

    A few things cause this exception:
    1) Check if you have all jars and if they're in the correct path.
    2) Your classpath might be broken, you can define it in the command line with java -cp yourClassPath or at your IDE if you're using one.

  2. ,

    you can change your scala version to 2.11.11

Solutions on the web

via Arqade by NethWar070802
, 1 year ago
net.minecraftforge.fml.common.launcher.FMLTweaker
via GitHub by Gunscrusader
, 1 year ago
net.minecraftforge.fml.common.launcher.FMLTweaker
via GitHub by Gunscrusader
, 1 week ago
net.minecraftforge.fml.common.launcher.FMLTweaker
via enginehub.org by Unknown author, 2 years ago
java.lang.ClassNotFoundException: net.minecraftforge.fml.common.launcher.FMLTweaker at java.net.URLClassLoader$1.run(URLClassLoader.java:372)[?:1.8.0_25] at java.net.URLClassLoader$1.run(URLClassLoader.java:361)[?:1.8.0_25] at java.security.AccessController.doPrivileged(Native Method)[?:1.8.0_25] at java.net.URLClassLoader.findClass(URLClassLoader.java:360)[?:1.8.0_25] at java.lang.ClassLoader.loadClass(ClassLoader.java:424)[?:1.8.0_25] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)[?:1.8.0_25] at java.lang.ClassLoader.loadClass(ClassLoader.java:357)[?:1.8.0_25] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106)[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.minecraft.launchwrapper.Launch.launch(Launch.java:98)[launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28)[launchwrapper-1.12.jar:?]