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Currently Supported: 1.19.X (Latest), 1.18.X (LTS)
Java and you: How to avoid crashes

Modder Support

This is the support section for those modding with Forge. Help with modding goes in here, however, please keep in mind that this is not a Java school. You are expected to have basic knowledge of Java before posting here.

Subforums

  1. ForgeGradle

    Help and support for the new ForgeGradle system of building mods.

    6k
    posts

45439 topics in this forum

  1. when I try to run my mod the game crashes if i hover over my custom items or try to open a chest

    By Perigrine333,
    • 1 reply
    • 2.1k views

  2. [1.19.2] Question about blocks and explosions

    By Thorad,
    • 2 replies
    • 2.4k views

  3. Rendering part of a block

    By zskamljic,
    • 8 replies
    • 4.3k views

  4. Unable to mine blocks in custom 1.19.2 mod

    By Christopher Condon,
    • 3 replies
    • 9.7k views

  5. Slot 2 not in a valide range [1.16]

    By Thanatos_0173_2,
    • 3 replies
    • 3.2k views

  6. Slot 2 not in a valide range [1.16]

    By Thanatos_0173_2,
    • 1 reply
    • 2.4k views

  7. [1.18.2] Getting ore rarities

    By MistaOmega,
    • 3 replies
    • 10.2k views

  8. [1.19] screen buttons and picture

    By Ezio214,
    • 3 replies
    • 4k views

  9. [1.19] can i create a new GameRule value type?

    By Kaboom Roads,
    • 6 replies
    • 4.3k views

  10. How to create an entity with properties and textures of a block

    By alimrv,
    • 6 replies
    • 5.1k views

  11. [SOLVED][1.19.2] Hitboxes

    By Ezio214,
    • 3 replies
    • 3.4k views

  12. [1.19.2, SOLVED] Mob spawn at world generation \ game freezed

    By Kosh,
    • 1 reply
    • 8k views

  13. Synched Entity Model

    By LuccaPossamai,
    • 8 replies
    • 3.8k views

  14. Missing Mod.TOML file

    By TypicalDay,
    • 5 replies
    • 5.1k views

  15. 1.16.5 How to change player speed?

    By ImPlasmaTbh,
    • 1 reply
    • 2k views

  16. [1.16.5] How do I set the world to thunder ?

    By Toasterkid,
    • 1 reply
    • 2.2k views

  17. [1.16.5] 3x3 mining

    By Tranzistor54,
    • 2 replies
    • 3.4k views

  18. Read JSON file in .jar

    By Vali_du_68,
    • 1 reply
    • 2.5k views

  19. [SOLVED] Register BlockEntity in 1.19.2

    By HobbyProgrammer,
    • 3 replies
    • 2.6k views

  20. How to get the item description from an item inside the current open container menu (clientside) (1.18.2)

    By Zappic3,
    • 2 replies
    • 2.8k views

  21. Location of a PlacedFeature? [1.19]

    By SpectralGerbil,
    • 2 replies
    • 1.4k views

  22. findNearestMapStructure always returns null?

    By SpectralGerbil,
    • 2 replies
    • 1.6k views

  23. How to construct a HolderSet? [1.19]

    By SpectralGerbil,
    • 0 replies
    • 1.5k views

  24. fml.modloading.dupedmod

    By desertay232,
    • 2 replies
    • 1.9k views

  25. [1.18.2] How to increase the rarity of vanilla oregeneration? Or how "Ore Veins" works

    By vntlyy007,
    • 1 reply
    • 1.5k views


  • Posts

    • ytjasonsas
      fml.modloading.dupemod error idk why this is happening i don't have any duped mod

      By ytjasonsas · Posted

      [01:12:23] [01:12:23] [main/INFO]: ModLauncher running: args [--username, ytjasonsas, --version, release minecraft modde, --gameDir, C:\Users\jason\AppData\Roaming\.minecraft\versions\release minecraft modde, --assetsDir, C:\Users\jason\AppData\Roaming\.minecraft\assets, --assetIndex, 1.16, --uuid, 281b40fd-958f-11eb-90a8-d45d64bce613, --accessToken, ????????, --userType, mojang, --versionType, release, --width, 925, --height, 530, --launchTarget, fmlclient, --fml.forgeVersion, 36.2.39, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20210115.111550] [main/INFO]: ModLauncher 8.1.3+8.1.3+main-8.1.x.c94d18ec starting: java version 1.8.0_51 by Oracle Corporation [01:12:23] [main/WARN]: LEGACY JDK DETECTED, SECURED JAR HANDLING DISABLED [01:12:23] [main/INFO]: Added Lets Encrypt root certificates as additional trust [01:12:23] [main/INFO]: SpongePowered MIXIN Subsystem Version=0.8.4 Source=file:/C:/Users/jason/AppData/Roaming/.minecraft/libraries/org/spongepowered/mixin/0.8.4/mixin-0.8.4.jar Service=ModLauncher Env=CLIENT [01:12:25] [main/INFO]: Launching target 'fmlclient' with arguments [--version, release minecraft modde, --gameDir, C:\Users\jason\AppData\Roaming\.minecraft\versions\release minecraft modde, --assetsDir, C:\Users\jason\AppData\Roaming\.minecraft\assets, --uuid, 281b40fd-958f-11eb-90a8-d45d64bce613, --username, ytjasonsas, --assetIndex, 1.16, --accessToken, ????????, --userType, mojang, --versionType, release, --width, 925, --height, 530] [01:12:30] [main/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD' [01:12:30] [main/INFO]: Setting user: ytjasonsas [01:12:31] [main/INFO]: Backend library: LWJGL version 3.2.2 build 10 [01:12:32] [main/FATAL]: Error during pre-loading phase net.minecraftforge.fml.ModLoadingException: fml.modloading.dupedmod     at net.minecraftforge.fml.ModLoadingException.lambda$fromEarlyException$0(ModLoadingException.java:50) ~[?:?]     at net.minecraftforge.fml.ModLoadingException$$Lambda$2937/1237743088.apply(Unknown Source) ~[?:?]     at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_51]     at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) ~[?:1.8.0_51]     at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) ~[?:1.8.0_51]     at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) ~[?:1.8.0_51]     at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_51]     at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_51]     at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_51]     at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_51]     at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:270) ~[?:1.8.0_51]     at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374) ~[?:1.8.0_51]     at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) ~[?:1.8.0_51]     at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) ~[?:1.8.0_51]     at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[?:1.8.0_51]     at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_51]     at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[?:1.8.0_51]     at net.minecraftforge.fml.ModLoader.<init>(ModLoader.java:106) ~[?:?]     at net.minecraftforge.fml.ModLoader.get(ModLoader.java:140) [?:?]     at net.minecraftforge.fml.client.ClientModLoader.lambda$begin$1(ClientModLoader.java:89) [?:?]     at net.minecraftforge.fml.client.ClientModLoader$$Lambda$2934/873769155.run(Unknown Source) [?:?]     at net.minecraftforge.fml.client.ClientModLoader.lambda$createRunnableWithCatch$4(ClientModLoader.java:109) [?:?]     at net.minecraftforge.fml.client.ClientModLoader$$Lambda$2935/919376773.run(Unknown Source) [?:?]     at net.minecraftforge.fml.client.ClientModLoader.begin(ClientModLoader.java:89) [?:?]     at net.minecraft.client.Minecraft.<init>(Minecraft.java:437) [?:?]     at net.minecraft.client.main.Main.main(Main.java:149) [?:?]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51]     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51]     at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51]     at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:37) [forge-1.16.5-36.2.39.jar:36.2]     at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$416/1445758842.call(Unknown Source) [forge-1.16.5-36.2.39.jar:36.2]     at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.1.3.jar:?]     at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.1.3.jar:?]     at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.1.3.jar:?]     at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.1.3.jar:?]     at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.1.3.jar:?] [01:12:32] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.sound.SoundLoadEvent to a broken mod state [01:12:32] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.ColorHandlerEvent$Block to a broken mod state [01:12:32] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.ColorHandlerEvent$Item to a broken mod state [01:12:34] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.ParticleFactoryRegisterEvent to a broken mod state [01:12:34] [main/INFO]: Narrator library for x64 successfully loaded [01:12:34] [main/INFO]: Reloading ResourceManager: Default [01:12:34] [Worker-Main-8/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Pre to a broken mod state [01:12:34] [Worker-Main-9/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Pre to a broken mod state [01:12:34] [Worker-Main-12/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.ModelRegistryEvent to a broken mod state [01:12:34] [Worker-Main-10/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Pre to a broken mod state [01:12:37] [Worker-Main-12/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Pre to a broken mod state [01:12:38] [Worker-Main-12/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Pre to a broken mod state [01:12:38] [Worker-Main-12/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Pre to a broken mod state [01:12:38] [Worker-Main-12/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Pre to a broken mod state [01:12:38] [Worker-Main-12/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Pre to a broken mod state [01:12:38] [Worker-Main-12/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Pre to a broken mod state [01:12:38] [Worker-Main-12/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Pre to a broken mod state [01:12:38] [main/INFO]: OpenAL initialized. [01:12:38] [main/INFO]: Sound engine started [01:12:39] [main/INFO]: Created: 1024x512x4 minecraft:textures/atlas/blocks.png-atlas [01:12:39] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Post to a broken mod state [01:12:39] [main/INFO]: Created: 256x128x4 minecraft:textures/atlas/signs.png-atlas [01:12:39] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Post to a broken mod state [01:12:39] [main/INFO]: Created: 512x512x4 minecraft:textures/atlas/banner_patterns.png-atlas [01:12:39] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Post to a broken mod state [01:12:39] [main/INFO]: Created: 512x512x4 minecraft:textures/atlas/shield_patterns.png-atlas [01:12:39] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Post to a broken mod state [01:12:39] [main/INFO]: Created: 256x256x4 minecraft:textures/atlas/chest.png-atlas [01:12:39] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Post to a broken mod state [01:12:39] [main/INFO]: Created: 512x256x4 minecraft:textures/atlas/beds.png-atlas [01:12:39] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Post to a broken mod state [01:12:39] [main/INFO]: Created: 512x256x4 minecraft:textures/atlas/shulker_boxes.png-atlas [01:12:39] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Post to a broken mod state [01:12:40] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.ModelBakeEvent to a broken mod state [01:12:40] [main/INFO]: Created: 256x256x0 minecraft:textures/atlas/particles.png-atlas [01:12:40] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Post to a broken mod state [01:12:40] [main/INFO]: Created: 256x256x0 minecraft:textures/atlas/paintings.png-atlas [01:12:40] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Post to a broken mod state [01:12:40] [main/INFO]: Created: 128x128x0 minecraft:textures/atlas/mob_effects.png-atlas [01:12:40] [main/ERROR]: Cowardly refusing to send event net.minecraftforge.client.event.TextureStitchEvent$Post to a broken mod state [01:12:40] [main/INFO]: [net.minecraft.crash.CrashReport:func_85057_a:196]: Negative index in crash report handler (23/26) [01:12:40] [main/FATAL]: Crash report saved to C:\Users\jason\AppData\Roaming\.minecraft\versions\release minecraft modde\crash-reports\crash-2022-12-09_01.12.40-fml.txt
    • warjort
      1.18.2 Forge crashes when starting up a world, no mods in the mod folder either

      By warjort · Posted

      Change your max fps to be larger than 0, either in the options menu or the options.txt
    • KalamityF
      1.19.2 Possible to tick an ItemStack?

      By KalamityF · Posted

      Solved, didn't see the inventoryTick method before writing this.
    • Antonio340
      Crash at lauching

      By Antonio340 · Posted

      Problem solved . The mods need to be updated to the 1.19.3 version and rightly . The mods citadel, better animal plus , journey map all works fine . Only architectury doesn’t work even after the update . I sent them a message to make them aware of the situation . 
    • usofnab
      Error when trying to open modded forge server

      By usofnab · Posted

      i installed java 8 after i read something online about it, how do i make sure it opens with java 8 and not java 19? since that seems to be the problem  

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