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Minecraft forge 1.12.2 won't launch

notacrocodile
in Support & Bug Reports

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Posted

i just installed forge for 1.12.2 but everytime I try to launch i get this error message, i reinstalled java and forge, reinstalled .minecraft but it doesn't seem to work

 

Picked up _JAVA_OPTIONS: -Xmx640m Exception in thread "main" java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap') at net.minecraft.launchwrapper.Launch.(Launch.java:34) at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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https://forums.minecraftforge.net/topic/93542-minecraft-forge-1122-wont-launch/
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