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My modpack comprising of around 500 or so mods keeps crashing. The farthest I've managed to get is it crashing on the completion of the "Mod Construction". I've tried to do some research and it seems like it is a problem with some of the mods not working with each other, however I haven't been able to get past that. Here is the link to my latest crash log https://pastebin.com/b42EezDB.

I tested both launchers you mentioned above. Both MultiMC and ATLauncher both immediately crash on startup. I attached the game log before it crashed however MultiMC version: 0.7.0-4248 Launched instance in online mode sessionserver.mojang.com resolves to: [2620:1ec:46::40, 2620:1ec:bdf::40, 13.107.246.40, 13.107.213.40] textures.minecraft.net resolves to: [2620:1ec:46::40, 2620:1ec:bdf::40, 13.107.246.40, 13.107.213.40] api.minecraftservices.com resolves to: [2620:1ec:46::40, 2620:1ec:bdf::40, 13.107.246.40, 13.107.213.40] Minecraft folder is: C:/Users/hcgar/Documents/MultiMC/instances/1.21.11/.minecraft Java path is: C:/Program Files/Common Files/Oracle/Java/javapath/javaw.exe Checking Java version... Java is version 21.0.10, using amd64 architecture, from Oracle Corporation. Main Class: net.minecraft.client.main.Main Native path: C:/Users/hcgar/Documents/MultiMC/instances/1.21.11/natives Traits: traits XR:Initial traits FirstThreadOnMacOS Libraries: C:/Users/hcgar/Documents/MultiMC/libraries/at/yawk/lz4/lz4-java/1.8.1/lz4-java-1.8.1.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/azure/azure-json/1.4.0/azure-json-1.4.0.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/github/oshi/oshi-core/6.9.0/oshi-core-6.9.0.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/google/code/gson/gson/2.13.2/gson-2.13.2.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/google/guava/failureaccess/1.0.3/failureaccess-1.0.3.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/google/guava/guava/33.5.0-jre/guava-33.5.0-jre.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/ibm/icu/icu4j/77.1/icu4j-77.1.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/microsoft/azure/msal4j/1.23.1/msal4j-1.23.1.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/mojang/authlib/7.0.61/authlib-7.0.61.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/mojang/blocklist/1.0.10/blocklist-1.0.10.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/mojang/brigadier/1.3.10/brigadier-1.3.10.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/mojang/datafixerupper/9.0.19/datafixerupper-9.0.19.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/mojang/jtracy/1.0.37/jtracy-1.0.37.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/mojang/jtracy/1.0.37/jtracy-1.0.37-natives-windows.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/mojang/logging/1.6.11/logging-1.6.11.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/mojang/patchy/2.2.10/patchy-2.2.10.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/mojang/text2speech/1.18.11/text2speech-1.18.11.jar C:/Users/hcgar/Documents/MultiMC/libraries/commons-codec/commons-codec/1.19.0/commons-codec-1.19.0.jar C:/Users/hcgar/Documents/MultiMC/libraries/commons-io/commons-io/2.20.0/commons-io-2.20.0.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-buffer/4.2.7.Final/netty-buffer-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-codec-base/4.2.7.Final/netty-codec-base-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-codec-compression/4.2.7.Final/netty-codec-compression-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-codec-http/4.2.7.Final/netty-codec-http-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-common/4.2.7.Final/netty-common-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-handler/4.2.7.Final/netty-handler-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-resolver/4.2.7.Final/netty-resolver-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-transport-classes-epoll/4.2.7.Final/netty-transport-classes-epoll-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-transport-classes-kqueue/4.2.7.Final/netty-transport-classes-kqueue-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-transport-native-unix-common/4.2.7.Final/netty-transport-native-unix-common-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/io/netty/netty-transport/4.2.7.Final/netty-transport-4.2.7.Final.jar C:/Users/hcgar/Documents/MultiMC/libraries/it/unimi/dsi/fastutil/8.5.18/fastutil-8.5.18.jar C:/Users/hcgar/Documents/MultiMC/libraries/net/java/dev/jna/jna-platform/5.17.0/jna-platform-5.17.0.jar C:/Users/hcgar/Documents/MultiMC/libraries/net/java/dev/jna/jna/5.17.0/jna-5.17.0.jar C:/Users/hcgar/Documents/MultiMC/libraries/net/sf/jopt-simple/jopt-simple/5.0.4/jopt-simple-5.0.4.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/apache/commons/commons-compress/1.28.0/commons-compress-1.28.0.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/apache/commons/commons-lang3/3.19.0/commons-lang3-3.19.0.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/apache/logging/log4j/log4j-api/2.25.2/log4j-api-2.25.2.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/apache/logging/log4j/log4j-core/2.25.2/log4j-core-2.25.2.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/apache/logging/log4j/log4j-slf4j2-impl/2.25.2/log4j-slf4j2-impl-2.25.2.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/jcraft/jorbis/0.0.17/jorbis-0.0.17.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/joml/joml/1.10.8/joml-1.10.8.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/jspecify/jspecify/1.0.0/jspecify-1.0.0.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-freetype/3.3.3/lwjgl-freetype-3.3.3.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-freetype/3.3.3/lwjgl-freetype-3.3.3-natives-windows.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-freetype/3.3.3/lwjgl-freetype-3.3.3-natives-windows-arm64.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-freetype/3.3.3/lwjgl-freetype-3.3.3-natives-windows-x86.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.3.3/lwjgl-glfw-3.3.3.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.3.3/lwjgl-glfw-3.3.3-natives-windows.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.3.3/lwjgl-glfw-3.3.3-natives-windows-arm64.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-glfw/3.3.3/lwjgl-glfw-3.3.3-natives-windows-x86.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.3.3/lwjgl-jemalloc-3.3.3.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.3.3/lwjgl-jemalloc-3.3.3-natives-windows.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.3.3/lwjgl-jemalloc-3.3.3-natives-windows-arm64.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-jemalloc/3.3.3/lwjgl-jemalloc-3.3.3-natives-windows-x86.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.3.3/lwjgl-openal-3.3.3.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.3.3/lwjgl-openal-3.3.3-natives-windows.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.3.3/lwjgl-openal-3.3.3-natives-windows-arm64.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-openal/3.3.3/lwjgl-openal-3.3.3-natives-windows-x86.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.3.3/lwjgl-opengl-3.3.3.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.3.3/lwjgl-opengl-3.3.3-natives-windows.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.3.3/lwjgl-opengl-3.3.3-natives-windows-arm64.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-opengl/3.3.3/lwjgl-opengl-3.3.3-natives-windows-x86.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.3.3/lwjgl-stb-3.3.3.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.3.3/lwjgl-stb-3.3.3-natives-windows.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.3.3/lwjgl-stb-3.3.3-natives-windows-arm64.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-stb/3.3.3/lwjgl-stb-3.3.3-natives-windows-x86.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-tinyfd/3.3.3/lwjgl-tinyfd-3.3.3.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-tinyfd/3.3.3/lwjgl-tinyfd-3.3.3-natives-windows.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-tinyfd/3.3.3/lwjgl-tinyfd-3.3.3-natives-windows-arm64.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl-tinyfd/3.3.3/lwjgl-tinyfd-3.3.3-natives-windows-x86.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl/3.3.3/lwjgl-3.3.3.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl/3.3.3/lwjgl-3.3.3-natives-windows.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl/3.3.3/lwjgl-3.3.3-natives-windows-arm64.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/lwjgl/lwjgl/3.3.3/lwjgl-3.3.3-natives-windows-x86.jar C:/Users/hcgar/Documents/MultiMC/libraries/org/slf4j/slf4j-api/2.0.17/slf4j-api-2.0.17.jar C:/Users/hcgar/Documents/MultiMC/libraries/com/mojang/minecraft/1.21.11/minecraft-1.21.11-client.jar Native libraries: Params: --username Hudson_458 --version 1.21.11 --gameDir C:/Users/hcgar/Documents/MultiMC/instances/1.21.11/.minecraft --assetsDir C:/Users/hcgar/Documents/MultiMC/assets --assetIndex 29 --uuid <PROFILE ID> --accessToken <ACCESS TOKEN> --versionType release Window size: 854 x 480 Java Arguments: [-XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump, -Xms512m, -Xmx1024m, -Duser.language=en] Minecraft process ID: 5792 Using onesix launcher. [19:57:17] [Datafixer Bootstrap/INFO]: 287 Datafixer optimizations took 458 milliseconds [19:57:21] [Render thread/INFO]: Environment: Environment[sessionHost=https://sessionserver.mojang.com, servicesHost=https://api.minecraftservices.com, profilesHost=https://api.mojang.com, name=PROD] [19:57:21] [Render thread/INFO]: Setting user: Hudson_458 [19:57:21] [Render thread/INFO]: Backend library: LWJGL version 3.3.3+5 [19:57:22] [Render thread/INFO]: Using optional rendering extensions: GL_ARB_buffer_storage, GL_KHR_debug, GL_ARB_vertex_attrib_binding, GL_ARB_direct_state_access, GL_EXT_texture_filter_anisotropic [19:57:22] [Render thread/INFO]: Reloading ResourceManager: vanilla [19:57:22] [Worker-Main-3/INFO]: Found unifont_pua-17.0.01.hex, loading [19:57:22] [Worker-Main-2/INFO]: Found unifont_all_no_pua-17.0.01.hex, loading [19:57:22] [Worker-Main-12/INFO]: Found unifont_jp_patch-17.0.01.hex, loading Process crashed with exit code -1073740791 (0xffffffffc0000409). Below is an analysis of the exit code. THIS MAY BE INCORRECT AND SHOULD BE TAKEN WITH A GRAIN OF SALT! System exit code name: STATUS_STACK_BUFFER_OVERRUN System exit code description: The system detected an overrun of a stack-based buffer in this application. This overrun could potentially allow a malicious user to gain control of this application. Please note that usually neither the exit code, nor its description are enough to diagnose issues! Always upload the entire log and not just the exit code. Clipboard copy at: 15 Mar 2026 19:57:51 -0400

You're just a genius, thank you so much

Also remove the mod eatinganimation

https://gnomebot.dev/paste/mclogs/2wnvkPd This time, the game didn't crash, but it complained that gml was missing when I logged in and wouldn't let me in

Remove gml (GroovyModLoader) If there is no change, add the new log

https://gnomebot.dev/paste/mclogs/k9PG1la

Add the crash-report or latest.log (logs-folder) with sites like https://mclo.gs/ and paste the link to it here

Mixin config gamemenuremovegfarb-common.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config bbb.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config fabric-item-group-api-v1.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config fabric-item-group-api-v1.client.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config palladiumcore-common.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config palladiumcore.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config vc_gliders-common.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config vc_gliders.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config fabric-item-api-v1.client.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config fabric-data-attachment-api-v1.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config fabric-data-attachment-api-v1.client.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config entity_model_features.mixins.json does not specify "minVersion" property [13:26:41] [main/ERROR]:Mixin config scaling_mobs.mixin.json does not specify "minVersion" property [13:26:42] [main/INFO]:Successfully loaded Mixin Connector [com.sonicether.soundphysics.MixinConnector]

Use Java 17 instead of Java 21 Essential is not working - there are also some client-side-only mods in your server files If you are new to this, maybe use a pre-configured modpack from curseforge - most of these already have a serverpack - use this a working base and add some mods

We're having server with friends. One od the is playing on Tlauncher. He says that when he tries to join, it shows him that je need to dowloand this ic_ip mod. When he wars seaeching for that mod. He fond only only one in version 1.14 but web are playing on 1.20. What isnthat ic_ip mod

https://mclo.gs/hx01V9z Gave me this when I hit share. Using Exaroton. First time trying to set up a server. Please help?

Make a test with another Launcher like MultiMC or AT Launcher

No I only have one GPU. It is a Nvidia GeForce GTX 1650 Super.

was hoping i was just missing something. thank you for your help.

I have no idea Make a test with a pre-configured Modpack - if this works, use this as working base and add some mods one by one

Is there a iGPU (Intel/AMD)? Maybe Minecraft (Java) is not using the Nvidia GPU https://windowsreport.com/minecraft-not-using-gpu/

I've removed the smallships mod, the problem persists upon attempting to create a new world. is it an issue with all neoforge mods that are within the pack or are there specific ones which do not work?

Yes I use Nvidia and driver's are fully updated

smallships is mentioned - make sure you are using forge mods - do not mix up with neoforge mods

Do you use Nvidia? If yes, did you check for driver updates, too?

There is no crash-report folder however I am adding the latest.log from the logs-folder https://mclo.gs/gfqB7g4

Currently attempting to use a custom modpack, which i can share the link to if need be. I receive a crash of "mouseclicked event handler overflow" https://pastebin.com/NcttA5Aj for crash report. log report is saying it is too large to use with pastebin, if its needed to help diagnose i will attempt to find another way to make it viewable. any help would be much appreciated

Is there a crash-report (crash-reports folder)? If not, add the latest.log from the logs-folder Add crash-reports with sites like https://mclo.gs/

As read above I cannot play the game and it immediately crashes on startup. All my drivers are updated and I do not have a hs_err_pid file in my minecraft folder.