Minecraft Forums

Hi,

My game has been repeatedly crashing whenever I try to launch it. It was working perfectly a week ago, and it just stopped working yesterday. I don't know what has changed- I hadn't touched the game for a week. This is the error that I've been getting every time:

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x000000010b0b9b96, pid=428, tid=21507
#
# JRE version: Java(TM) SE Runtime Environment (8.0_74-b02) (build 1.8.0_74-b02)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.74-b02 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# V  [libjvm.dylib+0x569b96]
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#

I am on a MacBook with OSX El Capitan (10.11.6), Minecraft version 1.12.2, Forge version 14.23.3.2655, and I have the following mods installed:

Biomes o' Plenty

Familiar Fauna

Forestry

Immersive Engineering Core

Immersive Engineering

Immersive Petroleum

Just Enough Items

Mantle

Mekanism (generators, tools)

Serene Seasons

Tinker's Construct

Tough As Nails

I took its advice and opened a Terminal window, and entered ulimit -c unlimited. After doing that and running the game again, it would sometimes load, but crash soon after entering a world. I have installed the newest version of java, but that didn't change anything. I haven't tried removing every mod one by one yet, but I'm not sure if it will help. It seems to run without any mods installed besides Forge, and it will still crash with Mekanism and/or Immersive Engineering removed (I tried those two because I was noticing other error messages generated by them but I think they're unrelated). I've tried looking up this issue but I haven't been able to find anything recent and relevant. It seems like a very general Java error that affects many non-Minecraft things as well. I'm happy to provide more information if it is needed. Any suggestions are appreciated.

Thanks.

hmmmm...this is one that I haven't experienced. Try looking for the mod(s) individually that cause the crash, my bet is a compatibility issue regarding the TConstruct/Mantle and another mod. Update us with which ones are causing the crash...

Quote from ozone_miner»

hmmmm...this is one that I haven't experienced. Try looking for the mod(s) individually that cause the crash, my bet is a compatibility issue regarding the TConstruct/Mantle and another mod. Update us with which ones are causing the crash...

Thanks for the suggestion. I will try removing mods one at a time and see what will work, starting with TC/Mantle, and if that does it, I'll check compatibility with each of the other mods in turn.

Quote from majestyc2k1»

Its a problem with Java:

# Problematic frame:
# V [libjvm.dylib+0x569b96]

Make sure to have the latest version installed.

Um, yes, of course it is a problem with Java. As I stated in my first post though, I already tried updating to the latest version and that didn't change anything.

Update: Looking like bad news. Removing TConstruct and Mantle didn't change anything, so out of curiosity, I removed all the mods again, but this time when the game loaded, I decided to try making a new world to see if it would work, and the game crashed after about 30 seconds walking around the world. Same exact "failed to write core dump" error that I pasted above.

Edit: I don't suppose I'd need to downgrade Java, would I? I remember having to do that once a couple years ago and it was quite annoying. I don't see it helping in this instance though since the game was working fine with the previous version of Java that I had for a couple weeks before this started happening.

Bump

I just tried to run an older 1.7.10 Forge version of the game that I had used flawlessly for years, and the same error occurred. It seems as if Java no longer likes Forge at all. This is really frustrating! In all the years I've played Minecraft this is the first time I've had an issue that I wasn't able to fix within a couple days.

Help, or referral to somewhere helpful, at least, would be very much appreciated!

Edit: I tried loading the game again on the 1.12.2, after entering ulimit -c unlimited in Terminal, and though it crashed during initialization still, I got something different in the crash report, and nothing about core dumps. Here is the full crash report:

---- Minecraft Crash Report ----

WARNING: coremods are present:
  SSLoadingPlugin (SereneSeasons-1.12.2-1.1.2-universal.jar)
  IELoadingPlugin (ImmersiveEngineering-0.12-80-core.jar)
Contact their authors BEFORE contacting forge

// But it works on my machine.

Time: 4/30/18 7:37 PM
Description: Initializing game

java.lang.NoClassDefFoundError: net/minecraft/item/Itemstack
	at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:518)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
	at net.minecraft.client.main.Main.main(SourceFile:123)
	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 net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: net.minecraft.item.Itemstack
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 9 more
Caused by: java.lang.NullPointerException


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Client thread
Stacktrace:
	at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:518)

-- Initialization --
Details:
Stacktrace:
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
	at net.minecraft.client.main.Main.main(SourceFile:123)
	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 net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
	Minecraft Version: 1.12.2
	Operating System: Mac OS X (x86_64) version 10.11.6
	Java Version: 1.8.0_74, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 682166056 bytes (650 MB) / 1912602624 bytes (1824 MB) up to 2147483648 bytes (2048 MB)
	JVM Flags: 7 total; -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP 9.42 Powered by Forge 14.23.3.2655 17 mods loaded, 17 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

	| State | ID                   | Version          | Source                                        | Signature                                |
	|:----- |:-------------------- |:---------------- |:--------------------------------------------- |:---------------------------------------- |
	| UCH   | minecraft            | 1.12.2           | minecraft.jar                                 | None                                     |
	| UCH   | mcp                  | 9.42             | minecraft.jar                                 | None                                     |
	| UCH   | FML                  | 8.0.99.99        | forge-1.12.2-14.23.3.2655.jar                 | e3c3d50c7c986df74c645c0ac54639741c90a557 |
	| UCH   | forge                | 14.23.3.2655     | forge-1.12.2-14.23.3.2655.jar                 | e3c3d50c7c986df74c645c0ac54639741c90a557 |
	| UCH   | biomesoplenty        | 7.0.1.2361       | BiomesOPlenty-1.12.2-7.0.1.2361-universal.jar | None                                     |
	| UCH   | familiarfauna        | 1.0.4            | FamiliarFauna-1.12.2-1.0.4.jar                | None                                     |
	| UCH   | jei                  | 4.8.5.159        | jei_1.12.2-4.8.5.159.jar                      | None                                     |
	| UCH   | toughasnails         | 3.1.0.101        | ToughAsNails-1.12.2-3.1.0.101-universal.jar   | None                                     |
	| UCH   | forestry             | 5.8.0.264        | forestry_1.12.2-5.8.0.264.jar                 | None                                     |
	| UCH   | mantle               | 1.12-1.3.2.24    | Mantle-1.12-1.3.2.24.jar                      | None                                     |
	| UCH   | tconstruct           | 1.12.2-2.9.1.65  | TConstruct-1.12.2-2.9.1.65.jar                | None                                     |
	| UCH   | immersiveengineering | 0.12-80          | ImmersiveEngineering-0.12-80.jar              | 4cb49fcde3b43048c9889e0a3d083225da926334 |
	| UCH   | immersivepetroleum   | 1.1.9            | immersivepetroleum-1.12.2-1.1.9.jar           | None                                     |
	| UCH   | mekanism             | 1.12.2-9.4.3.330 | Mekanism-1.12.2-9.4.3.330.jar                 | None                                     |
	| UCH   | mekanismgenerators   | 9.4.3            | MekanismGenerators-1.12.2-9.4.3.330.jar       | None                                     |
	| UCH   | mekanismtools        | 9.4.3            | MekanismTools-1.12.2-9.4.3.330.jar            | None                                     |
	| UCH   | sereneseasons        | 1.1.2            | SereneSeasons-1.12.2-1.1.2-universal.jar      | None                                     |

	Loaded coremods (and transformers): 
SSLoadingPlugin (SereneSeasons-1.12.2-1.1.2-universal.jar)
  sereneseasons.asm.transformer.EntityRendererTransformer
  sereneseasons.asm.transformer.WorldTransformer
IELoadingPlugin (ImmersiveEngineering-0.12-80-core.jar)
  blusunrize.immersiveengineering.common.asm.IEClassTransformer
	GL info: ' Vendor: 'Intel Inc.' Version: '2.1 INTEL-10.14.73' Renderer: 'Intel(R) HD Graphics 515'
	Pulsar/tconstruct loaded Pulses: 
		- TinkerCommons (Enabled/Forced)
		- TinkerWorld (Enabled/Not Forced)
		- TinkerTools (Enabled/Not Forced)
		- TinkerHarvestTools (Enabled/Forced)
		- TinkerMeleeWeapons (Enabled/Forced)
		- TinkerRangedWeapons (Enabled/Forced)
		- TinkerModifiers (Enabled/Forced)
		- TinkerSmeltery (Enabled/Not Forced)
		- TinkerGadgets (Enabled/Not Forced)
		- TinkerOredict (Enabled/Forced)
		- TinkerIntegration (Enabled/Forced)
		- TinkerFluids (Enabled/Forced)
		- TinkerMaterials (Enabled/Forced)
		- TinkerModelRegister (Enabled/Forced)

	Launched Version: 1.12.2-forge1.12.2-14.23.3.2655
	LWJGL: 2.9.4
	OpenGL: Intel(R) HD Graphics 515 GL version 2.1 INTEL-10.14.73, Intel Inc.
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because ARB_framebuffer_object is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

	Using VBOs: Yes
	Is Modded: Definitely; Client brand changed to 'fml,forge'
	Type: Client (map_client.txt)
	Resource Packs: 
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	CPU: 4x Intel(R) Core(TM) m3-6Y30 CPU @ 0.90GHz

Hello, just checking in, any help with this?