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crashes instantly [linux]

joinmod

By joinmod
in Support & Bug Reports

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joinmod Tree Puncher

joinmod

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Posted (edited)

hi i have a problem with forge on ALL versions.
i reinstalled ubuntu 18.04 on pc and installed opejdk and minecraft launcher
vanilla runs perfectly but if i install forge game crashes with 255 (i used minecraft launcher and then i repeated in multimc)

there logs from multimc (i logged into my mojang account) 

MultiMC version: 0.6.5-1217
	
Minecraft folder is:
/home/joinmod/.local/share/multimc/instances/1.12.2/.minecraft
	
Java path is:
/usr/lib/jvm/java-11-openjdk-amd64/bin/java
	
Java is version 10.0.2, using 64-bit architecture.
	
AMD FX-8320E Eight-Core Processor
Advanced Micro Devices, Inc. [AMD/ATI] Curacao PRO [Radeon R7 370 / R9 270/370 OEM] (rev 81)
	Subsystem: Micro-Star International Co., Ltd. [MSI] Curacao PRO [Radeon R7 370 / R9 270/370 OEM]
	Kernel driver in use: radeon
	Main Class:
  net.minecraft.launchwrapper.Launch
	Native path:
  /home/joinmod/.local/share/multimc/instances/1.12.2/natives
	Libraries:
  /home/joinmod/.local/share/multimc/libraries/net/java/jinput/jinput/2.0.5/jinput-2.0.5.jar
  /home/joinmod/.local/share/multimc/libraries/net/java/jutils/jutils/1.0.0/jutils-1.0.0.jar
  /home/joinmod/.local/share/multimc/libraries/org/lwjgl/lwjgl/lwjgl/2.9.4-nightly-20150209/lwjgl-2.9.4-nightly-20150209.jar
  /home/joinmod/.local/share/multimc/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.4-nightly-20150209/lwjgl_util-2.9.4-nightly-20150209.jar
  /home/joinmod/.local/share/multimc/libraries/com/mojang/patchy/1.1/patchy-1.1.jar
  /home/joinmod/.local/share/multimc/libraries/oshi-project/oshi-core/1.1/oshi-core-1.1.jar
  /home/joinmod/.local/share/multimc/libraries/net/java/dev/jna/jna/4.4.0/jna-4.4.0.jar
  /home/joinmod/.local/share/multimc/libraries/net/java/dev/jna/platform/3.4.0/platform-3.4.0.jar
  /home/joinmod/.local/share/multimc/libraries/com/ibm/icu/icu4j-core-mojang/51.2/icu4j-core-mojang-51.2.jar
  /home/joinmod/.local/share/multimc/libraries/net/sf/jopt-simple/jopt-simple/5.0.3/jopt-simple-5.0.3.jar
  /home/joinmod/.local/share/multimc/libraries/com/paulscode/codecjorbis/20101023/codecjorbis-20101023.jar
  /home/joinmod/.local/share/multimc/libraries/com/paulscode/codecwav/20101023/codecwav-20101023.jar
  /home/joinmod/.local/share/multimc/libraries/com/paulscode/libraryjavasound/20101123/libraryjavasound-20101123.jar
  /home/joinmod/.local/share/multimc/libraries/com/paulscode/librarylwjglopenal/20100824/librarylwjglopenal-20100824.jar
  /home/joinmod/.local/share/multimc/libraries/com/paulscode/soundsystem/20120107/soundsystem-20120107.jar
  /home/joinmod/.local/share/multimc/libraries/io/netty/netty-all/4.1.9.Final/netty-all-4.1.9.Final.jar
  /home/joinmod/.local/share/multimc/libraries/com/google/guava/guava/21.0/guava-21.0.jar
  /home/joinmod/.local/share/multimc/libraries/org/apache/commons/commons-lang3/3.5/commons-lang3-3.5.jar
  /home/joinmod/.local/share/multimc/libraries/commons-io/commons-io/2.5/commons-io-2.5.jar
  /home/joinmod/.local/share/multimc/libraries/commons-codec/commons-codec/1.10/commons-codec-1.10.jar
  /home/joinmod/.local/share/multimc/libraries/com/google/code/gson/gson/2.8.0/gson-2.8.0.jar
  /home/joinmod/.local/share/multimc/libraries/com/mojang/authlib/1.5.25/authlib-1.5.25.jar
  /home/joinmod/.local/share/multimc/libraries/com/mojang/realms/1.10.22/realms-1.10.22.jar
  /home/joinmod/.local/share/multimc/libraries/org/apache/commons/commons-compress/1.8.1/commons-compress-1.8.1.jar
  /home/joinmod/.local/share/multimc/libraries/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3.jar
  /home/joinmod/.local/share/multimc/libraries/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar
  /home/joinmod/.local/share/multimc/libraries/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar
  /home/joinmod/.local/share/multimc/libraries/it/unimi/dsi/fastutil/7.1.0/fastutil-7.1.0.jar
  /home/joinmod/.local/share/multimc/libraries/org/apache/logging/log4j/log4j-api/2.8.1/log4j-api-2.8.1.jar
  /home/joinmod/.local/share/multimc/libraries/org/apache/logging/log4j/log4j-core/2.8.1/log4j-core-2.8.1.jar
  /home/joinmod/.local/share/multimc/libraries/com/mojang/text2speech/1.10.3/text2speech-1.10.3.jar
  /home/joinmod/.local/share/multimc/libraries/net/minecraftforge/forge/1.12.2-14.23.5.2825/forge-1.12.2-14.23.5.2825-universal.jar
  /home/joinmod/.local/share/multimc/libraries/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar
  /home/joinmod/.local/share/multimc/libraries/org/ow2/asm/asm-all/5.2/asm-all-5.2.jar
  /home/joinmod/.local/share/multimc/libraries/org/jline/jline/3.5.1/jline-3.5.1.jar
  /home/joinmod/.local/share/multimc/libraries/com/typesafe/akka/akka-actor_2.11/2.3.3/akka-actor_2.11-2.3.3.jar
  /home/joinmod/.local/share/multimc/libraries/com/typesafe/config/1.2.1/config-1.2.1.jar
  /home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-actors-migration_2.11/1.1.0/scala-actors-migration_2.11-1.1.0.jar
  /home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-compiler/2.11.1/scala-compiler-2.11.1.jar
  /home/joinmod/.local/share/multimc/libraries/org/scala-lang/plugins/scala-continuations-library_2.11/1.0.2/scala-continuations-library_2.11-1.0.2.jar
  /home/joinmod/.local/share/multimc/libraries/org/scala-lang/plugins/scala-continuations-plugin_2.11.1/1.0.2/scala-continuations-plugin_2.11.1-1.0.2.jar
  /home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-library/2.11.1/scala-library-2.11.1.jar
  /home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-parser-combinators_2.11/1.0.1/scala-parser-combinators_2.11-1.0.1.jar
  /home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-reflect/2.11.1/scala-reflect-2.11.1.jar
  /home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-swing_2.11/1.0.1/scala-swing_2.11-1.0.1.jar
  /home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar
  /home/joinmod/.local/share/multimc/libraries/lzma/lzma/0.0.1/lzma-0.0.1.jar
  /home/joinmod/.local/share/multimc/libraries/java3d/vecmath/1.5.2/vecmath-1.5.2.jar
  /home/joinmod/.local/share/multimc/libraries/net/sf/trove4j/trove4j/3.0.3/trove4j-3.0.3.jar
  /home/joinmod/.local/share/multimc/libraries/org/apache/maven/maven-artifact/3.5.3/maven-artifact-3.5.3.jar
  /home/joinmod/.local/share/multimc/libraries/com/mojang/minecraft/1.12.2/minecraft-1.12.2-client.jar
	Native libraries:
  /home/joinmod/.local/share/multimc/libraries/net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-linux.jar
  /home/joinmod/.local/share/multimc/libraries/org/lwjgl/lwjgl/lwjgl-platform/2.9.4-nightly-20150209/lwjgl-platform-2.9.4-nightly-20150209-natives-linux.jar
  /home/joinmod/.local/share/multimc/libraries/com/mojang/text2speech/1.10.3/text2speech-1.10.3-natives-linux.jar
	Params:
  --username  --version MultiMC5 --gameDir /home/joinmod/.local/share/multimc/instances/1.12.2/.minecraft --assetsDir /home/joinmod/.local/share/multimc/assets --assetIndex 1.12 --uuid  --accessToken  --userType  --versionType release --tweakClass net.minecraftforge.fml.common.launcher.FMLTweaker
	Window size: 854 x 480
	Java Arguments:
[-Xms512m, -Xmx8192m, -Duser.language=en]
	
Minecraft process ID: 12157
	
Using onesix launcher.
Failed to start Minecraft:
Exiting with -1
java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:196)
    at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:231)
    at org.multimc.EntryPoint.listen(EntryPoint.java:143)
    at org.multimc.EntryPoint.main(EntryPoint.java:34)
Caused by: java.lang.ClassCastException: java.base/jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to java.base/java.net.URLClassLoader
    at net.minecraft.launchwrapper.Launch.<init>(Launch.java:34)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
    ... 8 more
Process exited with code 255.


meanwhile in the terminal 

872.046 D Task "LaunchController(0x2d21c80)" starting for the first time
  872.046 D Task "RefreshTask(0x2bcbe20)" starting for the first time
  872.289 D Processing authentication response.
  872.289 D Getting new access token.
  872.289 D Finished reading refresh response.
  872.289 D Task "RefreshTask(0x2bcbe20)" succeeded
  872.289 D Writing account list to "accounts.json"
  872.289 D Building JSON data structure.
  872.289 D Building account array.
  872.290 D Writing account list to file.
  872.290 D Saved account list to "accounts.json"
  873.474 D Task "LaunchTask(0x31f5c10)" starting for the first time
  873.501 D Task "TextPrint(0x2f9f160)" starting for the first time
  873.501 D Task "TextPrint(0x2f9f160)" succeeded
  873.501 D Task "TextPrint(0x2cc5210)" starting for the first time
  873.501 D Task "TextPrint(0x2cc5210)" succeeded
  873.502 D Task "CheckJava(0x2b8b520)" starting for the first time
  873.502 D Task "CheckJava(0x2b8b520)" succeeded
  873.502 D Task "ClaimAccount(0x2b83d40)" starting for the first time
  873.502 D Writing account list to "accounts.json"
  873.502 D Building JSON data structure.
  873.502 D Building account array.
  873.502 D Writing account list to file.
  873.502 D Saved account list to "accounts.json"
  873.502 W Account "[email protected]" is now in use.
  873.502 D Task "ClaimAccount(0x2b83d40)" succeeded
  873.502 D Task "Update(0x312eda0)" starting for the first time
  873.503 D Task "MinecraftUpdate(0x2b84df0)" starting for the first time
  873.503 D Task "ComponentUpdateTask(0x2b9eba0)" starting for the first time
  873.503 D Loading components
  873.503 D Index is already loaded
  873.503 D Component list save is scheduled for "1.12.2"
  873.503 D Resolving dependencies
  873.503 D "Req: net.minecraft == 1.12.2" Is met.
  873.503 D "Req: org.lwjgl" Is met.
  873.503 D Task "ComponentUpdateTask(0x2b9eba0)" succeeded
  873.503 D Component list update/resolve task succeeded for "1.12.2"
  873.503 D Task "FoldersTask(0x2ea2a30)" starting for the first time
  873.503 D Task "FoldersTask(0x2ea2a30)" succeeded
  873.503 D Task "LibrariesTask(0x2c51da0)" starting for the first time
  873.503 D "1.12.2" : downloading libraries
  873.503 D Applying "org.lwjgl" GOOD
  873.503 D Applying "net.minecraft" GOOD
  873.504 D Applying "net.minecraftforge" GOOD
  873.505 D Task "NetJob(Libraries for instance 1.12.2)" starting for the first time
  873.507 D Task "NetJob(Libraries for instance 1.12.2)" succeeded
  873.507 D Task "LibrariesTask(0x2c51da0)" succeeded
  873.507 D Task "FMLLibrariesTask(0x2aa2ef0)" starting for the first time
  873.507 D Task "FMLLibrariesTask(0x2aa2ef0)" succeeded
  873.507 D Task "AssetUpdateTask(0x2db9cc0)" starting for the first time
  873.508 D Asset index SHA1: "1584b57c1a0b5e593fad1f5b8f78536ca640547b"
  873.508 D "1.12.2" : Starting asset index download
  873.508 D Task "NetJob(Asset index for 1.12.2)" starting for the first time
  873.513 D Downloading  "https://launchermeta.mojang.com/v1/packages/1584b57c1a0b5e593fad1f5b8f78536ca640547b/1.12.json"
  873.594 D Download succeeded: "https://launchermeta.mojang.com/v1/packages/1584b57c1a0b5e593fad1f5b8f78536ca640547b/1.12.json"
  873.594 D Task "NetJob(Asset index for 1.12.2)" succeeded
  873.594 D "1.12.2" : Finished asset index download
  873.604 D Task "AssetUpdateTask(0x2db9cc0)" succeeded
  873.604 D Task "MinecraftUpdate(0x2b84df0)" succeeded
  873.604 D Task "Update(0x312eda0)" succeeded
  873.604 D Task "ModMinecraftJar(0x7f89d4009dd0)" starting for the first time
  873.605 D Task "ModMinecraftJar(0x7f89d4009dd0)" succeeded
  873.605 D Task "PrintInstanceInfo(0x2d73900)" starting for the first time
sh: 1: glxinfo: not found
  873.660 D Task "PrintInstanceInfo(0x2d73900)" succeeded
  873.660 D Task "CreateServerResourcePacksFolder(0x2d0a710)" starting for the first time
  873.661 D Task "CreateServerResourcePacksFolder(0x2d0a710)" succeeded
  873.661 D Task "ExtractNatives(0x7f89b8013ce0)" starting for the first time
  873.674 D Task "ExtractNatives(0x7f89b8013ce0)" succeeded
  873.674 D Task "ReconstructAssets(0x2b3ed30)" starting for the first time
  873.674 D reconstructAssets "assets" "assets/indexes" "assets/objects" "assets/virtual" "assets/virtual/1.12"
  873.680 D Task "ReconstructAssets(0x2b3ed30)" succeeded
  873.680 D Task "LauncherPartLaunch(0x2b83810)" starting for the first time
  873.687 D Env: ignoring "QT_PLUGIN_PATH" "/home/joinmod/.local/share/multimc/plugins"
  873.687 D Env: ignoring "LD_LIBRARY_PATH" "/home/joinmod/.local/share/multimc/bin:"
  873.687 D Env: ignoring "QT_ACCESSIBILITY" "1"
  873.687 D Env: ignoring "QT_IM_MODULE" "ibus"
  873.687 D Env: stripped @im=ibus from "@im=ibus" : ""
  873.687 D Env: ignoring "QT_FONTPATH" "/home/joinmod/.local/share/multimc/fonts"
  873.688 D Env: ignoring "LD_PRELOAD" ""
  873.688 D "-Xms512m -Xmx8192m -Duser.language=en -Djava.library.path=/home/joinmod/.local/share/multimc/instances/1.12.2/natives -cp /home/joinmod/.local/share/multimc/bin/jars/NewLaunch.jar:/home/joinmod/.local/share/multimc/libraries/net/java/jinput/jinput/2.0.5/jinput-2.0.5.jar:/home/joinmod/.local/share/multimc/libraries/net/java/jutils/jutils/1.0.0/jutils-1.0.0.jar:/home/joinmod/.local/share/multimc/libraries/org/lwjgl/lwjgl/lwjgl/2.9.4-nightly-20150209/lwjgl-2.9.4-nightly-20150209.jar:/home/joinmod/.local/share/multimc/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.4-nightly-20150209/lwjgl_util-2.9.4-nightly-20150209.jar:/home/joinmod/.local/share/multimc/libraries/com/mojang/patchy/1.1/patchy-1.1.jar:/home/joinmod/.local/share/multimc/libraries/oshi-project/oshi-core/1.1/oshi-core-1.1.jar:/home/joinmod/.local/share/multimc/libraries/net/java/dev/jna/jna/4.4.0/jna-4.4.0.jar:/home/joinmod/.local/share/multimc/libraries/net/java/dev/jna/platform/3.4.0/platform-3.4.0.jar:/home/joinmod/.local/share/multimc/libraries/com/ibm/icu/icu4j-core-mojang/51.2/icu4j-core-mojang-51.2.jar:/home/joinmod/.local/share/multimc/libraries/net/sf/jopt-simple/jopt-simple/5.0.3/jopt-simple-5.0.3.jar:/home/joinmod/.local/share/multimc/libraries/com/paulscode/codecjorbis/20101023/codecjorbis-20101023.jar:/home/joinmod/.local/share/multimc/libraries/com/paulscode/codecwav/20101023/codecwav-20101023.jar:/home/joinmod/.local/share/multimc/libraries/com/paulscode/libraryjavasound/20101123/libraryjavasound-20101123.jar:/home/joinmod/.local/share/multimc/libraries/com/paulscode/librarylwjglopenal/20100824/librarylwjglopenal-20100824.jar:/home/joinmod/.local/share/multimc/libraries/com/paulscode/soundsystem/20120107/soundsystem-20120107.jar:/home/joinmod/.local/share/multimc/libraries/io/netty/netty-all/4.1.9.Final/netty-all-4.1.9.Final.jar:/home/joinmod/.local/share/multimc/libraries/com/google/guava/guava/21.0/guava-21.0.jar:/home/joinmod/.local/share/multimc/libraries/org/apache/commons/commons-lang3/3.5/commons-lang3-3.5.jar:/home/joinmod/.local/share/multimc/libraries/commons-io/commons-io/2.5/commons-io-2.5.jar:/home/joinmod/.local/share/multimc/libraries/commons-codec/commons-codec/1.10/commons-codec-1.10.jar:/home/joinmod/.local/share/multimc/libraries/com/google/code/gson/gson/2.8.0/gson-2.8.0.jar:/home/joinmod/.local/share/multimc/libraries/com/mojang/authlib/1.5.25/authlib-1.5.25.jar:/home/joinmod/.local/share/multimc/libraries/com/mojang/realms/1.10.22/realms-1.10.22.jar:/home/joinmod/.local/share/multimc/libraries/org/apache/commons/commons-compress/1.8.1/commons-compress-1.8.1.jar:/home/joinmod/.local/share/multimc/libraries/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3.jar:/home/joinmod/.local/share/multimc/libraries/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar:/home/joinmod/.local/share/multimc/libraries/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar:/home/joinmod/.local/share/multimc/libraries/it/unimi/dsi/fastutil/7.1.0/fastutil-7.1.0.jar:/home/joinmod/.local/share/multimc/libraries/org/apache/logging/log4j/log4j-api/2.8.1/log4j-api-2.8.1.jar:/home/joinmod/.local/share/multimc/libraries/org/apache/logging/log4j/log4j-core/2.8.1/log4j-core-2.8.1.jar:/home/joinmod/.local/share/multimc/libraries/com/mojang/text2speech/1.10.3/text2speech-1.10.3.jar:/home/joinmod/.local/share/multimc/libraries/net/minecraftforge/forge/1.12.2-14.23.5.2825/forge-1.12.2-14.23.5.2825-universal.jar:/home/joinmod/.local/share/multimc/libraries/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar:/home/joinmod/.local/share/multimc/libraries/org/ow2/asm/asm-all/5.2/asm-all-5.2.jar:/home/joinmod/.local/share/multimc/libraries/org/jline/jline/3.5.1/jline-3.5.1.jar:/home/joinmod/.local/share/multimc/libraries/com/typesafe/akka/akka-actor_2.11/2.3.3/akka-actor_2.11-2.3.3.jar:/home/joinmod/.local/share/multimc/libraries/com/typesafe/config/1.2.1/config-1.2.1.jar:/home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-actors-migration_2.11/1.1.0/scala-actors-migration_2.11-1.1.0.jar:/home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-compiler/2.11.1/scala-compiler-2.11.1.jar:/home/joinmod/.local/share/multimc/libraries/org/scala-lang/plugins/scala-continuations-library_2.11/1.0.2/scala-continuations-library_2.11-1.0.2.jar:/home/joinmod/.local/share/multimc/libraries/org/scala-lang/plugins/scala-continuations-plugin_2.11.1/1.0.2/scala-continuations-plugin_2.11.1-1.0.2.jar:/home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-library/2.11.1/scala-library-2.11.1.jar:/home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-parser-combinators_2.11/1.0.1/scala-parser-combinators_2.11-1.0.1.jar:/home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-reflect/2.11.1/scala-reflect-2.11.1.jar:/home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-swing_2.11/1.0.1/scala-swing_2.11-1.0.1.jar:/home/joinmod/.local/share/multimc/libraries/org/scala-lang/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar:/home/joinmod/.local/share/multimc/libraries/lzma/lzma/0.0.1/lzma-0.0.1.jar:/home/joinmod/.local/share/multimc/libraries/java3d/vecmath/1.5.2/vecmath-1.5.2.jar:/home/joinmod/.local/share/multimc/libraries/net/sf/trove4j/trove4j/3.0.3/trove4j-3.0.3.jar:/home/joinmod/.local/share/multimc/libraries/org/apache/maven/maven-artifact/3.5.3/maven-artifact-3.5.3.jar:/home/joinmod/.local/share/multimc/libraries/com/mojang/minecraft/1.12.2/minecraft-1.12.2-client.jar org.multimc.EntryPoint"
  873.690 W QCoreApplication::postEvent: Unexpected null receiver
  873.913 C Task "LauncherPartLaunch(0x2b83810)" failed:  "Game crashed."
  873.913 D Writing account list to "accounts.json"
  873.913 D Building JSON data structure.
  873.913 D Building account array.
  873.913 D Writing account list to file.
  873.914 D Saved account list to "accounts.json"
  873.914 W Account "phonosens" is no longer in use.
  874.022 C Task "LaunchTask(0x31f5c10)" failed:  "Game crashed."
  874.022 C Task "LaunchController(0x2d21c80)" failed:  "Game crashed."
Edited by joinmod
add type of os in title
DaemonUmbra Reality Controller

DaemonUmbra

Posted
Posted

Forge for 1.12.2 and earlier only works with Java 8

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

 

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

 

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

Spoiler

Logs (Most issues require logs to diagnose):

Spoiler

Please post logs using one of the following sites (Thank you Lumber Wizard for the list):

https://gist.github.com/: 100MB Requires member (Free)

https://pastebin.com/: 512KB as guest, 10MB as Pro ($$$)

https://hastebin.com/: 400KB

Do NOT use sites like Mediafire, Dropbox, OneDrive, Google Drive, or a site that has a countdown before offering downloads.

 

What to provide:

...for Crashes and Runtime issues:

Minecraft 1.14.4 and newer:

Post debug.log

Older versions:

Please update...

 

...for Installer Issues:

Post your installer log, found in the same place you ran the installer

This log will be called either installer.log or named the same as the installer but with .log on the end

Note for Windows users:

Windows hides file extensions by default so the installer may appear without the .jar extension then when the .log is added the log will appear with the .jar extension

 

Where to get it:

Mojang Launcher: When using the Mojang launcher debug.log is found in .minecraft\logs.

 

Curse/Overwolf: If you are using the Curse Launcher, their configurations break Forge's log settings, fortunately there is an easier workaround than I originally thought, this works even with Curse's installation of the Minecraft launcher as long as it is not launched THROUGH Twitch:

Spoiler
  1. Make sure you have the correct version of Forge installed (some packs are heavily dependent on one specific build of Forge)
  2. Make a launcher profile targeting this version of Forge.
  3. Set the launcher profile's GameDir property to the pack's instance folder (not the instances folder, the folder that has the pack's name on it).
  4. Now launch the pack through that profile and follow the "Mojang Launcher" instructions above.

Video:

Spoiler

 

 

 

or alternately, 

 

Fallback ("No logs are generated"):

If you don't see logs generated in the usual place, provide the launcher_log.txt from .minecraft

 

Server Not Starting:

Spoiler

If your server does not start or a command window appears and immediately goes away, run the jar manually and provide the output.

 

Reporting Illegal/Inappropriate Adfocus Ads:

Spoiler

Get a screenshot of the URL bar or copy/paste the whole URL into a thread on the General Discussion board with a description of the Ad.

Lex will need the Ad ID contained in that URL to report it to Adfocus' support team.

 

Posting your mod as a GitHub Repo:

Spoiler

When you have an issue with your mod the most helpful thing you can do when asking for help is to provide your code to those helping you. The most convenient way to do this is via GitHub or another source control hub.

When setting up a GitHub Repo it might seem easy to just upload everything, however this method has the potential for mistakes that could lead to trouble later on, it is recommended to use a Git client or to get comfortable with the Git command line. The following instructions will use the Git Command Line and as such they assume you already have it installed and that you have created a repository.

 

  1. Open a command prompt (CMD, Powershell, Terminal, etc).
  2. Navigate to the folder you extracted Forge’s MDK to (the one that had all the licenses in).
  3. Run the following commands:
    1. git init
    2. git remote add origin [Your Repository's URL]
      • In the case of GitHub it should look like: https://GitHub.com/[Your Username]/[Repo Name].git
    3. git fetch
    4. git checkout --track origin/master
    5. git stage *
    6. git commit -m "[Your commit message]"
    7. git push
  4. Navigate to GitHub and you should now see most of the files.
    • note that it is intentional that some are not synced with GitHub and this is done with the (hidden) .gitignore file that Forge’s MDK has provided (hence the strictness on which folder git init is run from)
  5. Now you can share your GitHub link with those who you are asking for help.

[Workaround line, please ignore]

 

joinmod Tree Puncher

joinmod

Posted
  • Author
Posted
38 minutes ago, DaemonUmbra said:

Forge for 1.12.2 and earlier only works with Java 8

I used different versions from 1.7.10 openjdk 8 and openjdk11 to 1.12.2

I installing forge in the launcher, he can autoinstall forge

joinmod Tree Puncher

joinmod

Posted
  • Author
Posted

Whatever i just tried 2 different versions of java, multimc can change a executable version.

Same thing on minecraft launcher but i used default settings java (java 8), 1.7.10 crashs with forge (not tried launch 1.12.2 with forge)

phpr Tree Puncher

phpr

Posted
Posted

Hello,

I confirm MC 1.12.2 with MultiMC in Ubuntu Linux works best with Oracle JDK 1.8 version (download the tar.gz version).

You may have to switch from OpenJDK8 to Oracle JDK 1.8

 

 

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