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java.lang.VerifyError: Inconsistent stackmap frames at branch target 47

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---- Minecraft Crash Report ----      (thats the whole log it gives me)


WARNING: coremods are present:
  BCModPlugin (backpacks+1.12.2+-+3.5.0.jar)
  CXLibraryCore (cxlibrary-1.12.1-1.6.1.jar)
  DLFMLCorePlugin (DynamicLights-1.12.2.jar)
Contact their authors BEFORE contacting forge

// I let you down. Sorry :(

Time: 4/16/19 9:42 PM
Description: Exception in server tick loop

java.lang.VerifyError: Inconsistent stackmap frames at branch target 47
Exception Details:
    net/minecraft/world/World.func_175638_a(Lnet/minecraft/util/math/BlockPos;Lnet/minecraft/world/EnumSkyBlock;)I @32: goto
    Current frame's stack size doesn't match stackmap.
  Current Frame:
    bci: @32
    flags: { }
    locals: { 'net/minecraft/world/World', 'net/minecraft/util/math/BlockPos', 'net/minecraft/world/EnumSkyBlock', 'net/minecraft/block/state/IBlockState' }
    stack: { integer }
  Stackmap Frame:
    bci: @47
    flags: { }
    locals: { 'net/minecraft/world/World', 'net/minecraft/util/math/BlockPos', 'net/minecraft/world/EnumSkyBlock', 'net/minecraft/block/state/IBlockState' }
    stack: { top, integer }
    0x0000000: 2cb2 027e a600 0e2a 2bb6 02f8 9900 0610
    0x0000010: 0fac 2a2b b601 7f4e 2cb2 027e a600 0703
    0x0000020: a700 0f2d b901 8f01 002d 2a2b b808 4c36
    0x0000030: 042d b901 8f01 002d 2a2b b602 fb36 0515
    0x0000040: 0504 a200 0604 3605 1505 100f a100 0615
    0x0000050: 04ac 1504 100e a100 0615 04ac b804 ae3a
    0x0000060: 06b8 0850 3a07 1907 be36 0803 3609 1509
    0x0000070: 1508 a200 4a19 0715 0932 3a0a 1906 2bb6
    0x0000080: 0856 190a b608 5a57 2a2c 1906 b603 3115
    0x0000090: 0564 360b 150b 1504 a400 0715 0b36 0415
    0x00000a0: 0410 0ea1 0013 1504 360c 150c 360d 1906
    0x00000b0: b604 b915 0dac 8409 01a7 ffb5 1504 3607
    0x00000c0: 1906 b604 b915 07ac 3a0e 1906 b604 b919
    0x00000d0: 0ebf                                   
  Exception Handler Table:
    bci [97, 174] => handler: 200
    bci [182, 192] => handler: 200
    bci [200, 202] => handler: 200
  Stackmap Table:

    at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:94)
    at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:209)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)
    at java.lang.Thread.run(Thread.java:745)

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: 471582344 bytes (449 MB) / 838860800 bytes (800 MB) up to 8589934592 bytes (8192 MB)
    JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx8G -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 Optifine OptiFine_1.12.2_HD_U_D3 28 mods loaded, 28 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                                |
    |:------- |:--------------------------- |:----------------- |:--------------------------------------------- |:---------------------------------------- |
    | UCHIJAA | minecraft                   | 1.12.2            | minecraft.jar                                 | None                                     |
    | UCHIJAA | mcp                         | 9.42              | minecraft.jar                                 | None                                     |
    | UCHIJAA | FML                         |         | forge-1.12.2-                 | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCHIJAA | forge                       |      | forge-1.12.2-                 | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCHIJAA | backpacks16840              | 3.5.0             | backpacks+1.12.2+-+3.5.0.jar                  | None                                     |
    | UCHIJAA | xaerobetterpvp              | 1.13.8            | BetterPvP_1.13.8_Forge_1.12.jar               | None                                     |
    | UCHIJAA | biomesoplenty               |        | BiomesOPlenty-1.12.2- | None                                     |
    | UCHIJAA | cxlibrary                   | 1.6.1             | cxlibrary-1.12.1-1.6.1.jar                    | None                                     |
    | UCHIJAA | dynamiclights               | 1.4.8             | DynamicLights-1.12.2.jar                      | None                                     |
    | UCHIJAA | dynamiclights_onfire        | 1.0.7             | DynamicLights-1.12.2.jar                      | None                                     |
    | UCHIJAA | dynamiclights_creepers      | 1.0.6             | DynamicLights-1.12.2.jar                      | None                                     |
    | UCHIJAA | dynamiclights_dropitems     | 1.1.0             | DynamicLights-1.12.2.jar                      | None                                     |
    | UCHIJAA | dynamiclights_entityclasses | 1.0.1             | DynamicLights-1.12.2.jar                      | None                                     |
    | UCHIJAA | dynamiclights_mobequipment  | 1.1.0             | DynamicLights-1.12.2.jar                      | None                                     |
    | UCHIJAA | dynamiclights_flamearrows   | 1.0.1             | DynamicLights-1.12.2.jar                      | None                                     |
    | UCHIJAA | dynamiclights_floodlights   | 1.0.3             | DynamicLights-1.12.2.jar                      | None                                     |
    | UCHIJAA | dynamiclights_otherplayers  | 1.0.9             | DynamicLights-1.12.2.jar                      | None                                     |
    | UCHIJAA | dynamiclights_theplayer     | 1.1.3             | DynamicLights-1.12.2.jar                      | None                                     |
    | UCHIJAA | ironchest                   | 1.12.2- | ironchest-1.12.2-               | None                                     |
    | UCHIJAA | jei                         |         | jei_1.12.2-                      | None                                     |
    | UCHIJAA | longfallboots               | 1.2.1a            | longfallboots-1.2.1a.jar                      | None                                     |
    | UCHIJAA | metamorph                   | 1.1.5             | metamorph-1.1.5-1.12.2.jar                    | None                                     |
    | UCHIJAA | morefurnaces                | 1.10.3            | MoreFurnaces-1.12.2-1.10.3.jar                | None                                     |
    | UCHIJAA | naturescompass              | 1.5.0             | NaturesCompass-1.12.2-1.5.0.jar               | None                                     |
    | UCHIJAA | oreexcavation               | 1.4.118           | OreExcavation-1.4.118.jar                     | None                                     |
    | UCHIJAA | torohealthmod               | 1.12.2-11         | torohealth-1.12.2-11.jar                      | None                                     |
    | UCHIJAA | trashslot                   | 8.4.6             | TrashSlot_1.12.1-8.4.6.jar                    | None                                     |
    | UCHIJAA | xray                        | 1.4.0             | xray-1.12.2-1.4.2.jar                         | None                                     |

    Loaded coremods (and transformers):
BCModPlugin (backpacks+1.12.2+-+3.5.0.jar)
CXLibraryCore (cxlibrary-1.12.1-1.6.1.jar)
DLFMLCorePlugin (DynamicLights-1.12.2.jar)
    GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
    Profiler Position: N/A (disabled)
    Player Count: 0 / 8; []
    Type: Integrated Server (map_client.txt)
    Is Modded: Definitely; Client brand changed to 'fml,forge'
    OptiFine Version: OptiFine_1.12.2_HD_U_D3
    OptiFine Build: 20180515-125031
    Render Distance Chunks: 8
    Mipmaps: 4
    Anisotropic Filtering: 1
    Antialiasing: 0
    Multitexture: false
    Shaders: null
    OpenGlVersion: 4.6.0 NVIDIA 425.31
    OpenGlRenderer: GeForce RTX 2070/PCIe/SSE2
    OpenGlVendor: NVIDIA Corporation
    CpuCount: 6

Edited by JustSomeDude_
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Looks like a bad coremod, check these:

1 hour ago, JustSomeDude_ said:

WARNING: coremods are present:
  BCModPlugin (backpacks+1.12.2+-+3.5.0.jar)
  CXLibraryCore (cxlibrary-1.12.1-1.6.1.jar)
  DLFMLCorePlugin (DynamicLights-1.12.2.jar)
Contact their authors BEFORE contacting forge

(I would check CXLibrary first since it's designed for 1.12.1)

Edited by DaemonUmbra

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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5 hours ago, JustSomeDude_ said:

WARNING: coremods are present:
  BCModPlugin (backpacks+1.12.2+-+3.5.0.jar)
  CXLibraryCore (cxlibrary-1.12.1-1.6.1.jar)
  DLFMLCorePlugin (DynamicLights-1.12.2.jar)
Contact their authors BEFORE contacting forge

I would check dynamic lights because the affected code has to do with lighting

About Me


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When asking support remember to include all relevant log files (logs are found in .minecraft/logs/), code if applicable and screenshots if possible.

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