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game crashed when launching. Error: net.neoforged.fml.ModLoadingException, exit code -1
game crashed when launching. Error: net.neoforged.fml.ModLoadingException, exit code -1

Dipper, October 11, 20241 yr
- 1.21.1
- broken mod
- 5 replies
- 77.9k views
Dipper

October 11, 20241 yr
Failed to build unique mod list after mod discovery. net.minecraftforge.fml.loading.EarlyLoadingException: Duplicate mods found
Failed to build unique mod list after mod discovery. net.minecraftforge.fml.loading.EarlyLoadingException: Duplicate mods found

Crowdez, October 11, 20241 yr
- 1 reply
- 11.4k views
TileEntity

October 11, 20241 yr
crash when generating a chunk on 1.19.2 java 43.4.4
crash when generating a chunk on 1.19.2 java 43.4.4

Simsonic321, October 11, 20241 yr
- 1 reply
- 11.9k views
TileEntity

October 11, 20241 yr
Failed to synchronize registry data from server, closing connection
Failed to synchronize registry data from server, closing connection

thebescior, April 21, 20232 yr
- 5 replies
- 35.4k views
artyl23

October 11, 20241 yr
Forge Crashes After Installing Newest Version
Forge Crashes After Installing Newest Version

enchantedeyeball, October 11, 20241 yr
- 1.21.1
- 1 reply
- 24.1k views
TileEntity

October 11, 20241 yr
minecraft crashes when making a new world
minecraft crashes when making a new world

funash1998, October 10, 20241 yr
- 0 replies
- 7.5k views
funash1998

October 10, 20241 yr
I posted in an old topic and didn't read the FAQ
I posted in an old topic and didn't read the FAQ

jacob1111, October 10, 20241 yr
- didn't read faq
- 0 replies
- 9.4k views
jacob1111

October 10, 20241 yr
Pickaxe doesn't mine anything!!!
Pickaxe doesn't mine anything!!!

thekristaps123, October 10, 20241 yr
- 3 replies
- 25k views
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October 10, 20241 yr
Trying to remove mysterious extra XP bar
Trying to remove mysterious extra XP bar

Zurtalon, October 8, 20241 yr
- 6 replies
- 33.8k views
Zurtalon

October 10, 20241 yr
The server can run but a lot of the mods isnt working for example chipped and fantasy furniture workbenches doesnt work and etc.
The server can run but a lot of the mods isnt working for example chipped and fantasy furniture workbenches doesnt work and etc.

Aconiax, October 10, 20241 yr
- 1 reply
- 12.3k views
TileEntity

October 10, 20241 yr
jujustu craft 1.20.1 crashing when deploying domains
jujustu craft 1.20.1 crashing when deploying domains

SSallyWWallyy, October 10, 20241 yr
- 1 reply
- 11.5k views
TileEntity

October 10, 20241 yr
1.20.1 Forge crashes after launching even with no mods installed.
1.20.1 Forge crashes after launching even with no mods installed.

GateAndKey, October 9, 20241 yr
- 3 replies
- 18.6k views
TileEntity

October 10, 20241 yr
Minecraft 1.20.1 Forge 47.3.0 Crashes Upon Creating New World
Minecraft 1.20.1 Forge 47.3.0 Crashes Upon Creating New World

bruhitsmac, October 8, 20241 yr
- 1.20.1
- 5 replies
- 73k views
bruhitsmac

October 10, 20241 yr
game crash (error code 1)
game crash (error code 1)

Blue_SL, October 9, 20241 yr
- 1 reply
- 42.9k views
Ugdhar

October 10, 20241 yr
Minecraft Crash on World Load
Minecraft Crash on World Load

Arcul, October 9, 20241 yr
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October 9, 20241 yr
Can't Complete Forge Installer Step
Can't Complete Forge Installer Step

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- 0 replies
- 28.8k views
Milmour

October 9, 20241 yr
cpu is 89-99 for few seconds but later 0 cpu
cpu is 89-99 for few seconds but later 0 cpu

king_of_end, October 9, 20241 yr
- 0 replies
- 7.9k views
king_of_end

October 9, 20241 yr
Game keeps crashing w/ The game crashed whilst rendering overlay Error: java.lang.RuntimeException: null
Game keeps crashing w/ The game crashed whilst rendering overlay Error: java.lang.RuntimeException: null

Smallmae, October 8, 20241 yr
- 1 reply
- 11.8k views
TileEntity

October 9, 20241 yr
Game won't load existing worlds and crashes when I try to make a new one
Game won't load existing worlds and crashes when I try to make a new one

RopeJug, October 9, 20241 yr
- didn't read faq
- 1 reply
- 13.4k views
TileEntity

October 9, 20241 yr
Forge server block update not working
Forge server block update not working

pixelcaft, July 23, 20223 yr
- 4 replies
- 11k views
IttoS

October 9, 20241 yr
Can't connect to 1.20.1 Server
Can't connect to 1.20.1 Server

burger732, October 8, 20241 yr
- 0 replies
- 33.3k views
burger732

October 8, 20241 yr
Lags minecraft 1.20.1 java
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DeFreezeDead55, October 8, 20241 yr
- 0 replies
- 11k views
DeFreezeDead55

October 8, 20241 yr
Minecraft Crash Report
Minecraft Crash Report

Welnus, October 7, 20241 yr
- 1 reply
- 10.4k views
TileEntity

October 8, 20241 yr
Game crashing when creating worlds :(
Game crashing when creating worlds :(

Recherner, January 26, 20232 yr
- 12 replies
- 123.7k views
moneypablo431

October 7, 20241 yr
Forge 1.20.1 | 누락되었거나 지원되지 않는 필수 종속성
Forge 1.20.1 | 누락되었거나 지원되지 않는 필수 종속성

akadiel, October 7, 20241 yr
- 0 replies
- 7.8k views
akadiel

October 7, 20241 yr

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Enigmatica 2 Expert Crashes on startup Exit code1

i have tried deleting some things before start up, within the mods folder there is one called memory report, if I delete that folder before start up it works, that folder is created on startup

By Kaeptenxy · 5 hours ago5 hr
Enigmatica 2 Expert Crashes on startup Exit code1

still no luck on my end...
but thanks for all the help
https://mclo.gs/aezFybB

By Kaeptenxy · 6 hours ago6 hr
Network protocol error with vanilla client and upgrading world.

So... ummmm, forge "1.2.11"? Do you mean forge "1.21.11" (as said in your crash report)? If you really meant what you said, then you're really gonna' have to provide a download link here (and maybe even a time machine). Also, please specify the exact version of forge that you are using. Because your crash report is completely obfuscated (for whatever reason), people are going to need access to the mappings in order to make sense of this crash report. Provide all of this (the mappings should be easily accessible if you provide the exact forge version), and I will edit this crash report to make much more sense and post it back here via pastebin. Hopefully then it will be much easier for others to answer your question.

I will say though, just based on the error message I can see, chances are likely slim that you can use a vanilla client. These reasons would take a little while to get into, but even if chances look slim, you shouldn't let this discourage you; you never really know if a problem like this can't be solved unless we try.

Hope this can help us get somewhere easier to work with.
Let me know!

By Jackson Perr · 12 hours ago12 hr
Minecraft crashed after I ran out of storage on one of my disk drives

Alright, I have taken a look at the crash report you have provided and cross referenced it to the source code. It turns out that my theory is true! Strangely, when writing information to a save file, enigmatic legacy will just update the file and push all of its edits upon an error occurring. If it weren't for that, this issue probably wouldn't be happening. The problematic file you are looking for should be located directly in your world save folder in a file named "soul_archive.json". If you are having trouble finding this file, try using the search field in file explorer. The most direct solution to your issue at hand would be to delete this file directly. However, this file may be able to be repaired, but this option is up to you if you wish to pursue. Luckily for you, the file should be in a readable format. You can open it in notepad or some other text editor to view the contents. If you are having trouble detecting and solving issues within this file, you could try sending the raw contents of it through pastebin to this thread. I can take a look and send the modified contents back to you through pastebin, or if I could find no solution, I will let you know, in which case you should simply default to deleting the file.

Please let me know if you encounter any unexpected issues or if something I said is unclear to you; I will help to the best of my ability.

By Jackson Perr · 12 hours ago12 hr
Network protocol error with vanilla client and upgrading world.

Not sure if this can be regarded as an issue or not but I'll describe the symptoms and will be interested in the comments.
I have a 1.2.10 world and have been playing on a server modded with FallingTree using vanilla clients. As 1.2.11 is out, I wanted to upgrade the world so I installed forge 1.2.11 on the server and copied the world over (I maintain a new directory for each version). Upon trying to access the server with a vanilla client, I get a Network Protocol Error and get kicked off.
However, if I try to access the server with a vanilla client and allow the server to create a new world, no error. If I use a forge client with the old, no error. It seems to be the specific combination of using an existing world and the vanilla client.
For my purposes right now, I'm fine with using Forge clients. It would be nice to be able to use vanilla (since the mod I use doesn't require client modding). Just wondering if this is in any way possible.
Note that I tried removing FallingTree just in case and it made no difference.
The logs show
Time: 2025-12-12 11:54:23 Description: Packet handling error java.lang.ArrayIndexOutOfBoundsException: Index 18 out of bounds for length 18 at ama.a(SourceFile:114) at hig.a(SourceFile:665) at agp.a(SourceFile:54) at agp.a(SourceFile:12) at hig.a(SourceFile:2377) at adm.a(SourceFile:19) at adm.a(SourceFile:7) at xl$a.a(SourceFile:55) at xl.b(SourceFile:38) at gfj.d(SourceFile:1337) at gfj.j(SourceFile:966) at net.minecraft.client.main.Main.main(SourceFile:250) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace: at ama.a(SourceFile:114) at hig.a(SourceFile:665) at agp.a(SourceFile:54) at agp.a(SourceFile:12) -- Incoming Packet -- Details: Type: clientbound/minecraft:bundle Is Terminal: false Is Skippable: false Stacktrace: at abb.a(SourceFile:41) at hia.a(SourceFile:146) at hia.a(SourceFile:125) at xl$a.a(SourceFile:60) at xl.b(SourceFile:38) at gfj.d(SourceFile:1337) at gfj.j(SourceFile:966) at net.minecraft.client.main.Main.main(SourceFile:250) -- Connection -- Details: Protocol: play Flow: CLIENTBOUND Is Local: false Server type: OTHER Server brand: forge -- System Details -- Details: Minecraft Version: 1.21.11 Minecraft Version ID: 1.21.11 Operating System: Windows 10 (amd64) version 10.0 Java Version: 21.0.7, Microsoft Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft [redacted]

By Richy_T · Posted 14 hours ago14 hr

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