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operand stack overflow error

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so I was just wanting to make my Minecraft 1.12.2 more realistic when I get this error:



The game crashed whilst unexpected error

Error: java.lang.verifyerror: operand stack overflow


the mods that I used are:


better foliage

creative core

custom mob spawner

item physics

mo creatures

and sound physics.


if you have any information please tell me

the crash report (its long):


---- Minecraft Crash Report ----

WARNING: coremods are present:
  CoreModLoader (Sound-Physics-Mod-1.12.2.jar)
  PistonExpansionLoadingPlugin (pistonexpansion-1.12.2-1.0.1-core.jar)
  CreativePatchingLoader (CreativeCore-1.12.2.jar)
  ItemPatchingLoader (ItemPhysic-Mod-Full-1.12.2.jar)
  ShutdownPatcher (mcef-1.12.2-0.9-coremod.jar)
  BetterFoliageLoader (Better-Foliage-Mod-1.12.2.jar)
Contact their authors BEFORE contacting forge

// Shall we play a game?

Time: 7/15/19 2:15 PM
Description: Unexpected error

java.lang.VerifyError: Operand stack overflow
Exception Details:
    net/minecraft/client/renderer/chunk/RenderChunk.func_178581_b(FFFLnet/minecraft/client/renderer/chunk/ChunkCompileTaskGenerator;)V @408: aload
    Exceeded max stack size.
  Current Frame:
    bci: @408
    flags: { }
    locals: { 'net/minecraft/client/renderer/chunk/RenderChunk', float, float, float, 'net/minecraft/client/renderer/chunk/ChunkCompileTaskGenerator', 'net/minecraft/client/renderer/chunk/CompiledChunk', integer, 'net/minecraft/util/math/BlockPos', 'net/minecraft/util/math/BlockPos', 'net/minecraft/client/renderer/chunk/VisGraph', 'java/util/HashSet', '[Z', 'net/minecraft/client/renderer/BlockRendererDispatcher', 'java/util/Iterator', 'net/minecraft/util/math/BlockPos$MutableBlockPos', 'net/minecraft/block/state/IBlockState', 'net/minecraft/block/Block', '[Lnet/minecraft/util/BlockRenderLayer;', integer, integer, 'net/minecraft/util/BlockRenderLayer', integer, 'net/minecraft/client/renderer/BufferBuilder' }
    stack: { '[Z', integer, integer, 'net/minecraft/client/renderer/BlockRendererDispatcher', 'net/minecraft/block/state/IBlockState', 'net/minecraft/util/math/BlockPos$MutableBlockPos', 'net/minecraft/world/ChunkCache', 'net/minecraft/client/renderer/BufferBuilder' }
    0x0000000: bb00 4559 b700 fd3a 0504 3606 2ab4 0074
    0x0000010: 3a07 1907 100f 100f 100f b601 013a 0819
    0x0000020: 04b6 0105 b601 0819 04b6 010c b201 10a5
    0x0000030: 000c 1904 b601 05b6 0113 b119 0419 05b6
    0x0000040: 0117 1904 b601 05b6 0113 a700 103a 0919
    0x0000050: 04b6 0105 b601 1319 09bf bb01 1b59 b701
    0x0000060: 1c3a 09b8 0057 3a0a 2ab4 011e b601 239a
    0x0000070: 018f b201 2504 60b3 0125 b800 67be bc04
    0x0000080: 3a0b b801 2bb6 012f 3a0c 1907 1908 b801
    0x0000090: 33b9 0139 0100 3a0d 190d b901 4401 0099
    0x00000a0: 010d 190d b901 4801 00c0 000b 3a0e 2ab4
    0x00000b0: 011e 190e b601 4c3a 0f19 0fb9 0152 0100
    0x00000c0: 3a10 190f b901 5501 0099 000a 1909 190e
    0x00000d0: b601 5919 1019 0fb6 015f 9900 412a b401
    0x00000e0: 1e19 0eb2 0163 b601 673a 1119 11c6 002e
    0x00000f0: b201 6d19 11b6 0171 3a12 1912 c600 1f19
    0x0000100: 1219 11b6 0177 9900 0e19 0a19 11b6 017b
    0x0000110: 57a7 000a 1905 1911 b601 81b8 0067 3a11
    0x0000120: 1911 be36 1203 3613 1513 1512 a200 7919
    0x0000130: 1115 1332 3a14 1910 190f 1914 b801 899a
    0x0000140: 0006 a700 5d19 14b8 018f 1914 b601 9036
    0x0000150: 1519 10b6 0194 b901 9801 00b2 019e a500
    0x0000160: 4119 04b6 00e6 1515 b601 a23a 1619 0519
    0x0000170: 14b6 01a5 9a00 1219 0519 14b6 01a8 2a19
    0x0000180: 1619 07b7 00f0 190b 1515 5c33 190c 190f
    0x0000190: 190e 2ab4 011e 1916 1914 b801 ac80 5484
    0x00001a0: 1301 a7ff 8601 b801 8fa7 feef b800 673a
    0x00001b0: 0d19 0dbe 360e 0336 0f15 0f15 0ea2 0041
    0x00001c0: 190d 150f 323a 1019 0b19 10b6 0190 3399
    0x00001d0: 000a 1905 1910 b601 af19 0519 10b6 01a5
    0x00001e0: 9900 182a 1910 2324 2519 04b6 00e6 1910
    0x00001f0: b600 ec19 05b7 00f8 840f 01a7 ffbe 1905
    0x0000200: 1909 b601 b3b6 01b7 2ab4 004f b601 0819
    0x0000210: 0ab8 01ba 3a0b 2ab4 0059 b801 ba3a 0c19
    0x0000220: 0b2a b400 59b9 01c0 0200 5719 0c19 0ab9
    0x0000230: 01c0 0200 572a b400 59b9 01c3 0100 2ab4
    0x0000240: 0059 190a b901 c602 0057 2ab4 007f 190c
    0x0000250: 190b b601 ca2a b400 4fb6 0113 a700 0f3a
    0x0000260: 172a b400 4fb6 0113 1917 bfb1          
  Exception Handler Table:
    bci [39, 50] => handler: 77
    bci [59, 66] => handler: 77
    bci [77, 79] => handler: 77
    bci [527, 597] => handler: 607
    bci [607, 609] => handler: 607
  Stackmap Table:

    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1180)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:398)
    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:497)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_51, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 375775952 bytes (358 MB) / 805306368 bytes (768 MB) up to 2147483648 bytes (2048 MB)
    JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -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 11 mods loaded, 11 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                                |
    |:------ |:----------------- |:------------ |:--------------------------------- |:---------------------------------------- |
    | LCHIJA | minecraft         | 1.12.2       | minecraft.jar                     | None                                     |
    | LCHIJA | mcp               | 9.42         | minecraft.jar                     | None                                     |
    | LCHIJA | FML               |    | forge-1.12.2-     | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LCHIJA | forge             | | forge-1.12.2-     | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LCHIJA | creativecoredummy | 1.0.0        | minecraft.jar                     | None                                     |
    | LCHIJA | itemphysic        | 1.4.0        | minecraft.jar                     | None                                     |
    | LCHIJA | betterfoliage     | 2.1.10       | Better-Foliage-Mod-1.12.2.jar     | None                                     |
    | LCHIJA | creativecore      | 1.9.9        | CreativeCore-1.12.2.jar           | None                                     |
    | LCHIJA | customspawner     | 3.11.4       | Custom-Mob-Spawner-Mod-1.12.2.jar | None                                     |
    | LCHIJA | mocreatures       | 12.0.5       | Mo-Creatures-Mod-1.12.2.jar       | None                                     |
    | LCHIJA | soundphysics      | 1.0.4        | Sound-Physics-Mod-1.12.2.jar      | None                                     |

    Loaded coremods (and transformers): 
CoreModLoader (Sound-Physics-Mod-1.12.2.jar)
PistonExpansionLoadingPlugin (pistonexpansion-1.12.2-1.0.1-core.jar)
CreativePatchingLoader (CreativeCore-1.12.2.jar)
ItemPatchingLoader (ItemPhysic-Mod-Full-1.12.2.jar)
ShutdownPatcher (mcef-1.12.2-0.9-coremod.jar)
BetterFoliageLoader (Better-Foliage-Mod-1.12.2.jar)
    Launched Version: 1.12.2-forge1.12.2-
    LWJGL: 2.9.4
    OpenGL: Radeon RX 580 Series GL version 4.6.13558 Compatibility Profile Context 26.20.11015.5009, ATI Technologies Inc.
    GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 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: vanilla, file/Mn3 512x512 Resource Pack 1.13.zip (incompatible)
    Current Language: English (US)
    Profiler Position: N/A (disabled)
    CPU: 12x AMD Ryzen 5 2600 Six-Core Processor 


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The filenames of some of your mods suggests you are not getting them from official sources, please read my signature for more 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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