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My already used world wont open


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I was playing with my mods normally but once i closed the game and try to enter again it stucks at loading screen, although if i create a new world it opens as normal


Also if I first open a new world and then open my world, it crashes:



---- Minecraft Crash Report ----

WARNING: coremods are present:
  MicdoodlePlugin (MicdoodleCore-1.12.2-
  Inventory Tweaks Coremod (Inventory-Tweaks-Mod-1.12.2.jar)
  EnderCorePlugin (EnderCore-1.12.2-0.5.59-core.jar)
Contact their authors BEFORE contacting forge

// On the bright side, I bought you a teddy bear!

Time: 7/30/19 4:28 PM
Description: Exception in server tick loop

java.lang.ArrayIndexOutOfBoundsException: 3
    at java.util.Arrays$ArrayList.get(Arrays.java:3841)
    at net.minecraft.util.NonNullList.get(SourceFile:44)
    at micdoodle8.mods.galacticraft.core.tile.TileEntityInventory.func_70301_a(TileEntityInventory.java:92)
    at net.minecraftforge.items.wrapper.SidedInvWrapper.insertItem(SidedInvWrapper.java:96)
    at net.minecraftforge.items.ItemHandlerHelper.insertItem(ItemHandlerHelper.java:45)
    at com.raoulvdberge.refinedstorage.apiimpl.network.node.NetworkNodeExporter.update(NetworkNodeExporter.java:94)
    at com.raoulvdberge.refinedstorage.apiimpl.network.NetworkNodeListener.onWorldTick(NetworkNodeListener.java:23)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_222_NetworkNodeListener_onWorldTick_WorldTickEvent.invoke(.dynamic)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
    at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:182)
    at net.minecraftforge.fml.common.FMLCommonHandler.onPostWorldTick(FMLCommonHandler.java:274)
    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:776)
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668)
    at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:252)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
    at java.lang.Thread.run(Thread.java:748)

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

-- System Details --
    Minecraft Version: 1.12.2
    Operating System: Linux (amd64) version 4.18.0-25-generic
    Java Version: 1.8.0_212, Oracle Corporation
    Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1526288824 bytes (1455 MB) / 3120562176 bytes (2976 MB) up to 6442450944 bytes (6144 MB)
    JVM Flags: 7 total; -Xmx6G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
    IntCache: cache: 1, tcache: 1, allocated: 12, tallocated: 94
    FML: MCP 9.42 Powered by Forge Optifine OptiFine_1.12.2_HD_U_E3 25 mods loaded, 25 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                                |
    |:-------------- |:--------------------------------- |:------------------------ |:----------------------------------------- |:---------------------------------------- |
    | UCHIJAAAAAAAAA | minecraft                         | 1.12.2                   | minecraft.jar                             | None                                     |
    | UCHIJAAAAAAAAA | mcp                               | 9.42                     | minecraft.jar                             | None                                     |
    | UCHIJAAAAAAAAA | FML                               |                | forge-1.12.2-             | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCHIJAAAAAAAAA | forge                             |             | forge-1.12.2-             | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCHIJAAAAAAAAA | micdoodlecore                     |                          | minecraft.jar                             | None                                     |
    | UCHIJAAAAAAAAA | cfm                               | 6.3.0                    | cfm-6.3.0-mc1.12.2.jar                    | None                                     |
    | UCHIJAAAAAAAAA | chiselsandbits                    | 14.22                    | Chisels-and-Bits-Mod-1.12.2.jar           | None                                     |
    | UCHIJAAAAAAAAA | endercore                         | 1.12.2-0.5.59            | EnderCore-1.12.2-0.5.59.jar               | None                                     |
    | UCHIJAAAAAAAAA | jei                               |               | jei_1.12.2-                 | None                                     |
    | UCHIJAAAAAAAAA | enderio                           | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | enderiointegrationtic             | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | enderiobase                       | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | enderioconduits                   | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | enderioconduitsappliedenergistics | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | refinedstorage                    | 1.6.14                   | refinedstorage-1.6.14.jar                 | 57893d5b90a7336e8c63fe1c1e1ce472c3d59578 |
    | UCHIJAAAAAAAAA | enderioconduitsopencomputers      | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | enderioconduitsrefinedstorage     | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | enderiointegrationforestry        | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | enderiointegrationticlate         | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | enderiomachines                   | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | enderiopowertools                 | 5.0.25                   | Ender-IO-Mod-1.12.2.jar                   | None                                     |
    | UCHIJAAAAAAAAA | galacticraftcore                  |                | GalacticraftCore-1.12.2-     | None                                     |
    | UCHIJAAAAAAAAA | galacticraftplanets               |                | Galacticraft-Planets-1.12.2- | None                                     |
    | UCHIJAAAAAAAAA | inventorytweaks                   | 1.63+release.109.220f184 | Inventory-Tweaks-Mod-1.12.2.jar           | 55d2cd4f5f0961410bf7b91ef6c6bf00a766dcbe |
    | UCHIJAAAAAAAAA | reap                              | 1.5.2                    | Reap-Mod-1.12.2.jar                       | None                                     |

    Loaded coremods (and transformers):
MicdoodlePlugin (MicdoodleCore-1.12.2-
Inventory Tweaks Coremod (Inventory-Tweaks-Mod-1.12.2.jar)
EnderCorePlugin (EnderCore-1.12.2-0.5.59-core.jar)
    GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
    Ender IO: Found the following problem(s) with your installation (That does NOT mean that Ender IO caused the crash or was involved in it in any way. We add this information to help finding common problems, not as an invitation to post any crash you encounter to Ender IO's issue tracker. Always check the stack trace above to see which mod is most likely failing.):
                  * Optifine is installed. This is NOT supported.
                 This may (look up the meaning of 'may' in the dictionary if you're not sure what it means) have caused the error. Try reproducing the crash WITHOUT this/these mod(s) before reporting it.

    !!!You are looking at the diagnostics information, not at the crash.       !!!
    !!!Scroll up until you see the line with '---- Minecraft Crash Report ----'!!!

    Profiler Position: N/A (disabled)
    Player Count: 1 / 8; [GCEntityPlayerMP['steliosfil_123'/864, l='mods op', x=-160.47, y=68.00, z=-392.73]]
    Type: Integrated Server (map_client.txt)
    Is Modded: Definitely; Client brand changed to 'fml,forge'


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The filenames of one or more of your mods suggests you got them from a repost site.

Please read up on the StopModReposts project (link in my signature) for info on why this is a bad thing.

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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