java.lang.ClassNotFoundException

cpw.mods.fml.common.launcher.FMLTweaker


Samebug tips9

A few things cause this exception: 1) Check if you have all jars and if they're in the correct path when running. 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.

If you're using Hibernate, this indicates you're missing FasterXML Classmate dependency, which you can add to your dependencies. To add it, the groupId is com.fasterxml and artifactId is Classmate.

Don't give up yet. Our experts can help. Paste your full stack trace to get a solution.


Solutions on the web116

Solution icon of github
cpw.mods.fml.common.launcher.FMLTweaker

Solution icon of github
cpw.mods.fml.common.launcher.FMLTweaker

Solution icon of github
cpw.mods.fml.common.launcher.FMLTweaker

Solution icon of web
cpw.mods.fml.common.launcher.FMLTweaker

Solution icon of web
cpw.mods.fml.common.launcher.FMLTweaker

Solution icon of web
via feed-the-beast.com by Unknown author, 1 year ago
cpw.mods.fml.common.launcher.FMLTweaker

Solution icon of web
via feed-the-beast.com by Unknown author, 1 year ago
cpw.mods.fml.common.launcher.FMLTweaker

Solution icon of web
via minecraftzone.net by Unknown author, 1 year ago
cpw.mods.fml.common.launcher.FMLTweaker

Solution icon of web
via feed-the-beast.com by Unknown author, 1 year ago
cpw.mods.fml.common.launcher.FMLTweaker

Solution icon of web
via gutefrage.net by Unknown author, 1 year ago
cpw.mods.fml.common.launcher.FMLTweaker

Stack trace

  • java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker at java.net.URLClassLoader$1.run(URLClassLoader.java:202)[?:1.6.0_65] at java.security.AccessController.doPrivileged(Native Method)[?:1.6.0_65] at java.net.URLClassLoader.findClass(URLClassLoader.java:190)[?:1.6.0_65] at java.lang.ClassLoader.loadClass(ClassLoader.java:306)[?:1.6.0_65] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)[?:1.6.0_65] at java.lang.ClassLoader.loadClass(ClassLoader.java:247)[?:1.6.0_65] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106)[launchwrapper-1.12.jar:?] at java.lang.ClassLoader.loadClass(ClassLoader.java:306)[?:1.6.0_65] at java.lang.ClassLoader.loadClass(ClassLoader.java:247)[?:1.6.0_65] at java.lang.Class.forName0(Native Method)[?:1.6.0_65] at java.lang.Class.forName(Class.java:249)[?:1.6.0_65] 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:?]

Write tip

You have a different solution? A short tip here would help you and many other users who saw this issue last week.

Users with the same issue

Samebug visitor profile picture
Unknown user
Once, 1 year ago
Samebug visitor profile picture
Unknown user
2 times, 1 year ago
Samebug visitor profile picture
Unknown user
Once, 1 year ago
Samebug visitor profile picture
Unknown user
Once, 1 year ago
Samebug visitor profile picture
Unknown user
Once, 1 year ago
2384 more bugmates