MultiMC version: 0.7.0-4247


Launched instance in online mode

sessionserver.mojang.com resolves to:
    [13.107.213.40, 13.107.246.40]

textures.minecraft.net resolves to:
    [150.171.109.185]

api.minecraftservices.com resolves to:
    [13.107.213.40, 13.107.246.40]


Minecraft folder is:
/media/flexico/Minecraft/Minecraft/MultiMC/instances/v1.6.4 - Gulliver Pack/.minecraft


Java path is:
/media/flexico/Minecraft/Minecraft/MultiMC/java/Linux-jre-1.8.0_421/bin/java


Checking Java version...
Java is version 1.8.0_421, using amd64 architecture, from Oracle Corporation.


11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz
OpenGL version string: 4.6.0 NVIDIA 590.48.01

Main Class:
  net.minecraft.launchwrapper.Launch

Native path:
  /media/flexico/Minecraft/Minecraft/MultiMC/instances/v1.6.4 - Gulliver Pack/natives

Libraries:
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/net/java/jinput/jinput/2.0.5/jinput-2.0.5.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/net/java/jutils/jutils/1.0.0/jutils-1.0.0.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl/lwjgl/2.9.1-nightly-20131120/lwjgl-2.9.1-nightly-20131120.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl/lwjgl_util/2.9.1-nightly-20131120/lwjgl_util-2.9.1-nightly-20131120.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/net/sf/jopt-simple/jopt-simple/4.5/jopt-simple-4.5.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/com/paulscode/codecjorbis/20101023/codecjorbis-20101023.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/com/paulscode/codecwav/20101023/codecwav-20101023.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/com/paulscode/libraryjavasound/20101123/libraryjavasound-20101123.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/com/paulscode/librarylwjglopenal/20100824/librarylwjglopenal-20100824.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/com/paulscode/soundsystem/20120107/soundsystem-20120107.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/argo/argo/2.25_fixed/argo-2.25_fixed.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/org/bouncycastle/bcprov-jdk15on/1.47/bcprov-jdk15on-1.47.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/com/google/guava/guava/14.0/guava-14.0.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/commons-io/commons-io/2.4/commons-io-2.4.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/com/google/code/gson/gson/2.2.2/gson-2.2.2.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/net/minecraftforge/forge/1.6.4-9.11.1.965/forge-1.6.4-9.11.1.965-universal.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/net/minecraft/launchwrapper/1.8/launchwrapper-1.8.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/org/ow2/asm/asm-all/4.1/asm-all-4.1.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/org/scala-lang/scala-library/2.10.2/scala-library-2.10.2.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/org/scala-lang/scala-compiler/2.10.2/scala-compiler-2.10.2.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/lzma/lzma/0.0.1/lzma-0.0.1.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/com/mojang/minecraft/1.6.4/minecraft-1.6.4-client.jar

Native libraries:
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/net/java/jinput/jinput-platform/2.0.5/jinput-platform-2.0.5-natives-linux.jar
  /media/flexico/Minecraft/Minecraft/MultiMC/libraries/org/lwjgl/lwjgl/lwjgl-platform/2.9.1-nightly-20131120/lwjgl-platform-2.9.1-nightly-20131120-natives-linux.jar

Mods:
  [❌] 1.6.4 DamageIndicatorsv2.9.2.3.zip.disabled (disabled)
  [❌] ears-forge-1.6-1.4.5.jar.disabled (disabled)
  [❌] grim3212_core_1.6.2.zip.disabled (disabled)
  [❌] gulliver-forged-965-universal-0.14.3-MC1.6.4.jar.disabled (disabled)
  [❌] Little-Blocks-Mod-1.6.4.zip.disabled (disabled)
  [❌] slimevoidlib_universal_1.6.4.zip.disabled (disabled)
  [❌] The Lion King Mod.jar.disabled (disabled)
  [❌] time_control_remote_mod_1.6.4.jar.disabled (disabled)
  [❌] wireless_redstone_mod_1.6.4.zip.disabled (disabled)

Params:
  --username Flexico64 --session token:<ACCESS TOKEN>:<PROFILE ID> --version 1.6.4 --gameDir /media/flexico/Minecraft/Minecraft/MultiMC/instances/v1.6.4 - Gulliver Pack/.minecraft --assetsDir /media/flexico/Minecraft/Minecraft/MultiMC/assets/virtual/legacy --tweakClass cpw.mods.fml.common.launcher.FMLTweaker

Window size: 1200 x 960

Java Arguments:
[-Dfml.ignoreInvalidMinecraftCertificates=true, -Xms256m, -Xmx2048m, -Duser.language=en]


Minecraft process ID: 797827


Using onesix launcher.

Mar 21, 2026 7:44:52 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Mar 21, 2026 7:44:52 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Mar 21, 2026 7:44:52 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
2026-03-21 19:44:52 [INFO] [ForgeModLoader] Forge Mod Loader version 6.4.49.965 for Minecraft 1.6.4 loading
2026-03-21 19:44:52 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_421, running on Linux:amd64:6.17.0-14-generic, installed at /media/flexico/Minecraft/Minecraft/MultiMC/java/Linux-jre-1.8.0_421
2026-03-21 19:44:52 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2026-03-21 19:44:52 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2026-03-21 19:44:52 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2026-03-21 19:44:52 [SEVERE] [ForgeModLoader] Unable to launch
java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:911)
	at java.util.ArrayList$Itr.remove(ArrayList.java:875)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:27)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:243)
	at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:278)
	at org.multimc.EntryPoint.listen(EntryPoint.java:143)
	at org.multimc.EntryPoint.main(EntryPoint.java:34)
Process exited with exit code 0 (0x0).
Please note that usually neither the exit code, nor its description are enough to diagnose issues!
Always upload the entire log and not just the exit code.