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Minecraft Legacy Launcher errors

Hacky code to launch old Minecraft versions from the new launcher

https://github.com/Mojang/LegacyLauncher
Solution coverage:
Summary coverage:

Top patterns

  1. LaunchClassLoader.findClass() has thrown a NullPointerException
    No solution
  2. LaunchClassLoader.findClass() has thrown a ClassNotFoundException
    No solution
  3. LaunchClassLoader.findClass() has thrown a ClassNotFoundException

    This is thrown when the Java Virtual Machine (JVM) tries to load a particular class and the specified class cannot be found in the classpath. Make sure Trove library jar is added to your project's build path and you are using the latest version.

Error patternsPackagesClassesMethodsExceptions
DescriptionException TypeEntry MethodWeb pages

LaunchClassLoader.findClass() has thrown a NullPointerException

java.lang.NullPointerException
net.minecraft.launchwrapper.LaunchClassLoader.findClass
609Web pages
NullPointerExceptionLaunchClassLoader.findClass()609

LaunchClassLoader.findClass() has thrown a ClassNotFoundException

java.lang.NullPointerException
1 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
606Web pages
ClassNotFoundExceptionLaunchClassLoader.findClass()606

LaunchClassLoader.findClass() has thrown a ClassNotFoundException

java.lang.ClassNotFoundException
net.minecraft.launchwrapper.LaunchClassLoader.findClass
538Web pages
1Solution
ClassNotFoundExceptionLaunchClassLoader.findClass()538

LaunchClassLoader.findClass() has thrown a RuntimeException

java.lang.RuntimeException
2 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
153Web pages
RuntimeExceptionLaunchClassLoader.findClass()153

LaunchClassLoader.findClass() has thrown a ClassNotFoundException

java.lang.RuntimeException
3 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
149Web pages
ClassNotFoundExceptionLaunchClassLoader.findClass()149

LaunchClassLoader.findClass() has thrown a Throwable

java.lang.Throwable
net.minecraft.launchwrapper.LaunchClassLoader.findClass
105Web pages
ThrowableLaunchClassLoader.findClass()105

Launch.main() has thrown a ThreadGroup

java.lang.ThreadGroup
net.minecraft.launchwrapper.Launch.main
96Web pages
ThreadGroupLaunch.main()96

Launch.launch() has thrown a ThreadGroup

java.lang.ThreadGroup
net.minecraft.launchwrapper.Launch.launch
96Web pages
ThreadGroupLaunch.launch()96

Launch.main() has thrown an IndexOutOfBoundsException

java.lang.IndexOutOfBoundsException
19 frames hidden
net.minecraft.launchwrapper.Launch.main
77Web pages
IndexOutOfBoundsExceptionLaunch.main()77

Launch.main() has thrown a ConcurrentModificationException

java.util.ConcurrentModificationException
3 frames hidden
net.minecraft.launchwrapper.Launch.main
76Web pages
ConcurrentModificationExceptionLaunch.main()76

Launch.main() has thrown a NoClassDefFoundError

java.lang.NullPointerException
26 frames hidden
net.minecraft.launchwrapper.Launch.main
73Web pages
NoClassDefFoundErrorLaunch.main()73

Launch.main() has thrown a Throwable

java.lang.Throwable
net.minecraft.launchwrapper.Launch.main
64Web pages
ThrowableLaunch.main()64

Launch.launch() has thrown a Throwable

java.lang.Throwable
net.minecraft.launchwrapper.Launch.launch
64Web pages
ThrowableLaunch.launch()64

Launch.main() has thrown an UnsupportedClassVersionError

java.lang.UnsupportedClassVersionError
22 frames hidden
net.minecraft.launchwrapper.Launch.main
60Web pages
UnsupportedClassVersionErrorLaunch.main()60

LaunchClassLoader.runTransformers() has thrown an ASMTransformerWrapper$TransformerException

java.lang.RuntimeException
3 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.runTransformers
52Web pages
ASMTransformerWrapper$TransformerExceptionLaunchClassLoader.runTransformers()52

Launch.main() has thrown a ClassNotFoundException

java.lang.ClassNotFoundException
13 frames hidden
net.minecraft.launchwrapper.Launch.main
49Web pages
ClassNotFoundExceptionLaunch.main()49

Launch.main() has thrown a LWJGLException

org.lwjgl.LWJGLException
15 frames hidden
net.minecraft.launchwrapper.Launch.main
48Web pages
LWJGLExceptionLaunch.main()48

Launch.main() has thrown a NoClassDefFoundError

java.lang.NullPointerException
18 frames hidden
net.minecraft.launchwrapper.Launch.main
46Web pages
NoClassDefFoundErrorLaunch.main()46

Launch.main() has thrown a NoClassDefFoundError

java.lang.NullPointerException
26 frames hidden
net.minecraft.launchwrapper.Launch.main
39Web pages
NoClassDefFoundErrorLaunch.main()39

Launch.main() has thrown a ClassNotFoundException

java.lang.ClassNotFoundException
10 frames hidden
net.minecraft.launchwrapper.Launch.main
34Web pages
ClassNotFoundExceptionLaunch.main()34

Launch.main() has thrown a NoSuchMethodError

java.lang.NoSuchMethodError
8 frames hidden
net.minecraft.launchwrapper.Launch.main
33Web pages
NoSuchMethodErrorLaunch.main()33

LaunchClassLoader.findClass() has thrown a ClassNotFoundException

java.lang.UnsupportedClassVersionError
5 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
32Web pages
ClassNotFoundExceptionLaunchClassLoader.findClass()32

Launch.main() has thrown a FMLLaunchHandler

net.minecraftforge.fml.relauncher.FMLLaunchHandler
net.minecraft.launchwrapper.Launch.main
29Web pages
FMLLaunchHandlerLaunch.main()29

Launch.launch() has thrown a FMLLaunchHandler

net.minecraftforge.fml.relauncher.FMLLaunchHandler
net.minecraft.launchwrapper.Launch.launch
29Web pages
FMLLaunchHandlerLaunch.launch()29

Launch.main() has thrown an IllegalArgumentException

java.lang.IllegalArgumentException
13 frames hidden
net.minecraft.launchwrapper.Launch.main
26Web pages
IllegalArgumentExceptionLaunch.main()26

LaunchClassLoader.findClass() has thrown a FMLLaunchHandler

net.minecraftforge.fml.relauncher.FMLLaunchHandler
net.minecraft.launchwrapper.LaunchClassLoader.findClass
25Web pages
FMLLaunchHandlerLaunchClassLoader.findClass()25

LaunchClassLoader.findClass() has thrown a ClassNotFoundException

java.lang.UnsupportedClassVersionError
4 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
25Web pages
ClassNotFoundExceptionLaunchClassLoader.findClass()25

LaunchClassLoader.findClass() has thrown an ASMTransformerWrapper$TransformerException

java.lang.RuntimeException
4 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
25Web pages
ASMTransformerWrapper$TransformerExceptionLaunchClassLoader.findClass()25

Launch.main() has thrown a ConcurrentModificationException

java.util.ConcurrentModificationException
13 frames hidden
net.minecraft.launchwrapper.Launch.main
24Web pages
ConcurrentModificationExceptionLaunch.main()24

Launch.main() has thrown a NullPointerException

java.lang.NullPointerException
16 frames hidden
net.minecraft.launchwrapper.Launch.main
23Web pages
NullPointerExceptionLaunch.main()23

Launch.main() has thrown a VerifyError

java.lang.VerifyError
8 frames hidden
net.minecraft.launchwrapper.Launch.main
23Web pages
VerifyErrorLaunch.main()23

Launch.main() has thrown a ClassNotFoundException

java.lang.ClassNotFoundException
17 frames hidden
net.minecraft.launchwrapper.Launch.main
22Web pages
ClassNotFoundExceptionLaunch.main()22

LaunchClassLoader.findClass() has thrown a ThreadGroup

java.lang.ThreadGroup
net.minecraft.launchwrapper.LaunchClassLoader.findClass
21Web pages
ThreadGroupLaunchClassLoader.findClass()21

Launch.main() has thrown an IndexOutOfBoundsException

java.lang.IndexOutOfBoundsException
18 frames hidden
net.minecraft.launchwrapper.Launch.main
21Web pages
IndexOutOfBoundsExceptionLaunch.main()21

LaunchClassLoader.findClass() has thrown a ClassNotFoundException

java.lang.ClassFormatError
4 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
21Web pages
ClassNotFoundExceptionLaunchClassLoader.findClass()21

LaunchClassLoader.registerTransformer() has thrown a ClassNotFoundException

java.lang.NullPointerException
4 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.registerTransformer
20Web pages
ClassNotFoundExceptionLaunchClassLoader.registerTransformer()20

LaunchClassLoader.findClass() has thrown a ClassNotFoundException

java.lang.RuntimeException
5 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
20Web pages
ClassNotFoundExceptionLaunchClassLoader.findClass()20

Launch.main() has thrown a LoaderException

java.lang.ClassNotFoundException
47 frames hidden
net.minecraft.launchwrapper.Launch.main
19Web pages
LoaderExceptionLaunch.main()19

Launch.launch() has thrown a Throwable$WrappedPrintStream

java.lang.Throwable$WrappedPrintStream
net.minecraft.launchwrapper.Launch.launch
18Web pages
Throwable$WrappedPrintStreamLaunch.launch()18

LaunchClassLoader.findClass() has thrown a ClassNotFoundException

java.lang.NullPointerException
4 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
18Web pages
ClassNotFoundExceptionLaunchClassLoader.findClass()18

Launch.main() has thrown a Throwable$WrappedPrintStream

java.lang.Throwable$WrappedPrintStream
net.minecraft.launchwrapper.Launch.main
17Web pages
Throwable$WrappedPrintStreamLaunch.main()17

LaunchClassLoader.runTransformers() has thrown a MixinTransformer

org.spongepowered.asm.mixin.transformer.MixinTransformer
net.minecraft.launchwrapper.LaunchClassLoader.runTransformers
17Web pages
MixinTransformerLaunchClassLoader.runTransformers()17

Launch.main() has thrown a MixinTransformer

org.spongepowered.asm.mixin.transformer.MixinTransformer
net.minecraft.launchwrapper.Launch.main
17Web pages
MixinTransformerLaunch.main()17

Launch.launch() has thrown a MixinTransformer

org.spongepowered.asm.mixin.transformer.MixinTransformer
net.minecraft.launchwrapper.Launch.launch
17Web pages
MixinTransformerLaunch.launch()17

LaunchClassLoader.findClass() has thrown a MixinTransformer

org.spongepowered.asm.mixin.transformer.MixinTransformer
net.minecraft.launchwrapper.LaunchClassLoader.findClass
17Web pages
MixinTransformerLaunchClassLoader.findClass()17

Launch.main() has thrown a ModelLoaderRegistry$LoaderException

net.minecraft.client.renderer.block.model.ModelBlockDefinition$MissingVariantException
17 frames hidden
net.minecraft.launchwrapper.Launch.main
17Web pages
ModelLoaderRegistry$LoaderExceptionLaunch.main()17

LaunchClassLoader.findClass() has thrown a ClassNotFoundException

java.lang.NullPointerException
6 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
16Web pages
ClassNotFoundExceptionLaunchClassLoader.findClass()16

Launch.main() has thrown a ModelLoaderRegistry$LoaderException

net.minecraft.client.renderer.block.model.ModelBlockDefinition$MissingVariantException
18 frames hidden
net.minecraft.launchwrapper.Launch.main
15Web pages
ModelLoaderRegistry$LoaderExceptionLaunch.main()15

LaunchClassLoader.findClass() has thrown a ClassNotFoundException

java.lang.IncompatibleClassChangeError
4 frames hidden
net.minecraft.launchwrapper.LaunchClassLoader.findClass
15Web pages
ClassNotFoundExceptionLaunchClassLoader.findClass()15

Launch.main() has thrown a NoClassDefFoundError

java.lang.ClassNotFoundException
43 frames hidden
net.minecraft.launchwrapper.Launch.main
14Web pages
NoClassDefFoundErrorLaunch.main()14
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