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My world crashes before it didn't


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--My world never crashed before but now when I load in it crashes for some reason--



---- Minecraft Crash Report ----
// Sorry :(

Time: 8/12/19 11:57 AM
Description: Exception in server tick loop

java.lang.ArrayIndexOutOfBoundsException: -39
    at net.minecraft.world.chunk.NibbleArray.func_76582_a(SourceFile:28)
    at net.minecraft.world.chunk.storage.ExtendedBlockStorage.func_76665_b(SourceFile:75)
    at net.minecraft.world.chunk.Chunk.func_76628_c(Chunk.java:548)
    at net.minecraft.world.chunk.Chunk.func_150812_a(Chunk.java:878)
    at net.minecraft.world.chunk.Chunk.func_150813_a(Chunk.java:862)
    at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadEntities(AnvilChunkLoader.java:500)
    at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:41)
    at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:12)
    at net.minecraftforge.common.util.AsynchronousExecutor$Task.finish(AsynchronousExecutor.java:189)
    at net.minecraftforge.common.util.AsynchronousExecutor.finishActive(AsynchronousExecutor.java:354)
    at net.minecraftforge.common.chunkio.ChunkIOExecutor.tick(ChunkIOExecutor.java:30)
    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:596)
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
    at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:396)
    at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

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

-- System Details --
    Minecraft Version: 1.7.10
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_221, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1630258544 bytes (1554 MB) / 2853175296 bytes (2721 MB) up to 3817865216 bytes (3641 MB)
    JVM Flags: 11 total; -Xms1024M -Xmx4096M -XX:MaxPermSize=256M -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:+UseSplitVerifier -XX:+FailOverToOldVerifier -XX:-HeapDumpOnOutOfMemoryError -XX:+UseCompressedOops -XX:+ScavengeBeforeFullGC -XX:+PrintCommandLineFlags
    AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
    IntCache: cache: 15, tcache: 0, allocated: 13, tallocated: 95
    FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 67 mods loaded, 66 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
    UCHIJAAAA    mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) 
    UCHIJAAAA    FML{} [Forge Mod Loader] (forge-1.7.10- 
    UCHIJAAAA    Forge{} [Minecraft Forge] (forge-1.7.10- 
    UCHIJAAAA    CodeChickenCore{} [CodeChicken Core] (minecraft.jar) 
    UCHIJAAAA    MobiusCore{1.2.5} [MobiusCore] (minecraft.jar) 
    UCHIJAAAA    NotEnoughItems{} [Not Enough Items] (NotEnoughItems-1.7.10- 
    UCHIJAAAA    malisiscore{1.7.10-0.10.5+unknown-b0.git-unknown} [Malisis Core] (Malisis' Core.jar) 
    UCHIJAAAA    FastCraft{1.25} [FastCraft] (fastcraft.jar) 
    UCHIJAAAA    Baubles{} [Baubles] (Baubles.jar) 
    UCHIJAAAA    surpriseeggs{1.0.6} [Surprise Eggs] (Adventure Backpack.jar) 
    UCHIJAAAA    adventurebackpack{1.7.10-0.8b} [Adventure Backpack] (Adventure Backpack.jar) 
    UCHIJAAAA    AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI.jar) 
    UCHIJAAAA    armourersWorkshop{1.7.10-} [Armourer's Workshop] (Armourer's Workshop.jar) 
    UCHIJAAAA    asielib{0.2.7} [asielib] (asielib.jar) 
    UCHIJAAAA    BiblioCraft{1.10.5} [BiblioCraft] (BiblioCraft.jar) 
    UCHIJAAAA    CarpentersBlocks{3.3.6} [Carpenter's Blocks] (Carpenter's Blocks.jar) 
    UCHIJAAAA    Railcraft{} [Railcraft] (Railcraft.jar) 
    UCHIJAAAA    chisel{} [Chisel 2] (Chisel 2.jar) 
    UCHIJAAAA    controlling{1.0.0} [Controlling] (Controlling.jar) 
    UCHIJAAAA    RDMenuServer{} [RDMenuServer] (CustomMenu.jar) 
    UCHIJAAAA    customnpcs{1.7.10d} [CustomNpcs] (CustomNpcs.jar) 
    UCHIJAAAA    DamageIndicatorsMod{3.2.3} [Damage Indicators] (Damage Indicators.jar) 
    UCHIJAAAA    darkcore{0.3} [Dark Core] (Dark Core.jar) 
    UCHIJAAAA    props{2.0.2} [Decocraft] (Decocraft.jar) 
    UCHIJAAAA    EE3{0.3.507} [Equivalent Exchange 3] (Equivalent Exchange 3.jar) 
    UCHIJAAAA    FoodPlus{3.2rS} [§bFood Plus] (FoodPlus.jar) 
    UCHIJAAAA    iChunUtil{4.2.2} [iChunUtil] (iChunUtil.jar) 
    UCHIJAAAA    GraviGun{4.0.0-beta} [GraviGun] (GravityGun.jar) 
    UCHIJAAAA    Hats{4.0.1} [Hats] (Hats.jar) 
    UCHIJAAAA    HatStand{4.0.0} [HatStand] (HatStand-4.0.0.jar) 
    UCHIJAAAA    InventoryPets{1.1.2a} [Inventory Pets] (Inventory Pets.jar) 
    UCHIJAAAA    IronChest{} [Iron Chest] (Iron Chest.jar) 
    UCHIJAAAA    jewelrycraft2{1.1.4} [Jewelrycraft 2] (Jewelrycraft 2.jar) 
    UCHIJAAAA    pacman{1.0.7} [Killer Pacman] (Killer Pacman.jar) 
    UCHIJAAAA    lucky{5.1.0} [Lucky Block] (LuckyBlocks.jar) 
    UCHIJAAAA    malisisdoors{1.7.10-1.4.3} [Malisis' Doors] (Malisis' Doors.jar) 
    UCHIJAAAA    mcheli{0.10.6} [MC Helicopter] (MC Helicopter.zip) 
    UCHIJAAAA    battlegear2{1.7.10} [Mine & Blade Battlegear 2 - Bullseye] (Mine & Blade Battlegear 2 - Bullseye.jar) 
    UCHIJAAAA    MobProperties{0.4.0} [Mob Properties] (Mob Properties.jar) 
    UCHIJAAAA    morehealth{6.3} [More Health Forge] (More Health Forge.jar) 
    UCHIJAAAA    Morph{0.9.1} [Morph] (Morph.jar) 
    UCHIJAAAA    cfm{3.4.7} [§9MrCrayfish's Furniture Mod] (MrCrayfish's Furniture Mod.jar) 
    UCHIJAAAA    MutantCreatures{1.4.8} [Mutant Creatures] (Mutant Creatures.jar) 
    UCHIJAAAA    NEIAddons{} [NEI Addons] (NEI Addons.jar) 
    UCHIJAAAA    NEIAddons|AppEng{} [NEI Addons: Applied Energistics 2] (NEI Addons.jar) 
    UCHIJAAAA    NEIAddons|Botany{} [NEI Addons: Botany] (NEI Addons.jar) 
    UCHIJAAAA    NEIAddons|Forestry{} [NEI Addons: Forestry] (NEI Addons.jar) 
    UCHIJAAAA    NEIAddons|CraftingTables{} [NEI Addons: Crafting Tables] (NEI Addons.jar) 
    UCHIJAAAA    NEIAddons|ExNihilo{} [NEI Addons: Ex Nihilo] (NEI Addons.jar) 
    UCHIJAAAA    MapWriter{2.1.2} [MapWriter] (Opis.jar) 
    UCHIJAAAA    Opis{1.2.5} [Opis] (Opis.jar) 
    UCHIJAAAA    origin{3.3.0} [Origin] (Origin.jar) 
    UCHIJAAAA    pandorasbox{2.0.1} [Pandora's Box] (Pandora's Box.jar) 
    UCHIJAAAA    PortalGun{4.0.0-beta-4} [PortalGun] (PortalGun-4.0.0-beta-4.jar) 
    UCHIJAAAA    SaintsCore{0.8} [Saintscore] (Saintscore.jar) 
    UCHIJAAAA    securitycraft{v1.7.4.1} [SecurityCraft] (SecurityCraft.jar) 
    UCHIJAAAA    SSTOW{1.7.10-0.1-RC9-7} [Soul Shards: The Old Ways] (Soul Shards- The Old Ways.jar) 
    UCHIJAAAA    statues{2.1.3} [Statues] (Statues.jar) 
    UCHIJAAAA    sus{4.1.2} [Superheroes Unlimited Mod] (Superheroes Mod.jar) 
    UCHIJAAAA    TardisMod{0.99} [Tardis Mod] (Tardis Mod.jar) 
    UCHIJAAAA    OreSpawn{} [OreSpawn] (The OreSpawn Mod.zip) 
    UCHIJAAAA    secretroomsmod{4.7.1} [The SecretRoomsMod] (The SecretRoomsMod.jar) 
    UCHIJAAAA    TrailMix{4.0.0} [TrailMix] (TrailMix.jar) 
    UCHIJAAAA    transformers{${version}} [Transformers Mod] (Transformers Mod.jar) 
    UCHIJAAAA    weepingangels{3.3.2} [Weeping Angels] (Weeping Angels.jar) 
    UCHIJAAAA    witchery{0.24.1} [Witchery] (Witchery.jar) 
    UD    asielibcore{} [AsieLib CoreMod] (minecraft.jar) 
    GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
    Profiler Position: N/A (disabled)
    Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
    Player Count: 1 / 8; [EntityPlayerMP['Chrtor'/493, l='New World', x=744.47, y=106.60, z=384.42]]
    Type: Integrated Server (map_client.txt)
    Is Modded: Definitely; Client brand changed to 'fml,forge'

Edited by Chrtor
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1.7.10 is no longer supported on this forum due to its age.

Please update to a modern version of Minecraft to receive support.

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.


Logs (Most issues require logs to diagnose):


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:

  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.






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:


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:


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:


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]


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