I got a mod pack a few days ago (Roguelike Adventures and Dungeons).
This ran smoothly for a few days, but then there were problems when starting, because as soon as you started the mod via Twitch in the launcher, an error message appeared in the laucher that the game has crashed.
The following error messages appeared in the "Logs" folder
[11:12:17] [main / INFO]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[11:12:17] [main / ERROR]: Unable to launch java.lang.ClassNotFoundException: net.minecraftforge.fml.common.launcher.FMLTweaker at java.net.URLClassLoader.findClass (URLClassLoader.java:381) ~ [ ?: 1.8.0_51] at java.lang.ClassLoader.loadClass (ClassLoader.java:424) ~ [?: 1.8.0_51] at sun.misc.Launcher $ AppClassLoader.loadClass (Launcher.java:331) ~ [?: 1.8.0_51] at java.lang.ClassLoader.loadClass (ClassLoader.java:357) ~ [?: 1.8.0_51] at net.minecraft.launchwrapper.LaunchClassLoader.findClass (LaunchClassLoader.java:106) ~ [launchwrapper-1.12. Jar:?] at java.lang.ClassLoader.loadClass (ClassLoader.java:424) ~ [?: 1.8.0_51] at java.lang.ClassLoader.loadClass (ClassLoader.java:357) ~ [?: 1.8.0_51] at java.lang.Class.forName0 (Native Method) ~ [?: 1.8.0_51] at java.lang.Class.forName (Class.java:348) ~ [?: 1.8.0_51] 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:?]
Restart, reinstallation (from Twitch and Minecraft) did not help…
Does anyone have any ideas on how to fix this?
Here is some system information
CPU: AMD Ryzen 5 2600 6-core 3.85GHz
GPU: NVIDEA GeForce GTX 1660
16GB RAM
Windows 10 Home (64-bit)
Minecraft version for Mod: 1.12.2
Java version: Version 8 Update 51
Sometimes it bugs. Did you reinstall the mod?
So Techniclauncher also reinstalled?
Yes, first thing
