Mod Create And Clockwork (Valkyrien Skies X Create) Failing To Load

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Introduction

The Create and Clockwork mod, a combination of the Create and Clockwork mods, is failing to load in Minecraft 1.20.x with the Forge mod loader. This issue occurs when only the Valkyrien Skies, addons, and the Create and Clockwork mods are installed, with no other mods present.

Issue Description

When launching the game, it displays an error message stating that the Create and Clockwork mod has failed to load. This issue has been tested in a modpack and with only the specified five mods: Clockwork, Create, Valkyrien Skies, Eureka!, and Kotlin for Forge.

Issue Reproduction

The issue can be reproduced by installing the specified mods and launching the game.

Logs

The Minecraft crash report provides detailed information about the error, including the stacktrace and system details.

Minecraft Crash Report

// Don't do that.

Time: 2025-04-19 19:37:23
Description: Mod loading error has occurred

java.lang.Exception: Mod Loading has failed
	at net.minecraftforge.logging.CrashReportExtender.dumpModLoadingCrashReport(CrashReportExtender.java:60) ~[forge-1.20.1-47.4.0-universal.jar%23171!/:?] {re:classloading}
	at net.minecraftforge.client.loading.ClientModLoader.completeModLoading(ClientModLoader.java:135) ~[forge-1.20.1-47.4.0-universal.jar%23171!/:?] {re:classloading}
	at net.minecraft.client.Minecraft.lambda$new$4(Minecraft.java:571) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A}
	at net.minecraft.Util.m_137521_(Util.java:421) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] {re:classloading}
	at net.minecraft.client.Minecraft.lambda$new$5(Minecraft.java:564) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A}
	at net.minecraftforge.client.loading.ForgeLoadingOverlay.m_88315_(ForgeLoadingOverlay.java:146) ~[forge-1.20.1-47.4.0-universal.jar%23171!/:?] {re:classloading}
	at net.minecraft.client.renderer.GameRenderer.m_109093_(GameRenderer.java:954) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:ponder.mixins.json:client.accessor.GameRendererAccessor,pl:mixin:APP:valkyrienskies-common.mixins:client.renderer.MixinGameRenderer,pl:mixin:APP:create.mixins.json:client.GameRendererMixin,pl:mixin:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1146) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:718) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:218) ~[forge-47.4.0.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
	at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] {}
	at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
	at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] {}
	at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111) ~[fmlloader-1.20.1-47.4.0.jar:?] {}
	at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.4.0.jar:?] {}
	at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$makeService$0(CommonClientLaunchHandler.java:25) ~[fmlloader-1.20.1-47.4.0.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:108) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.9.jar:?] {}
	at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}

Cause of the Issue

The issue is caused by a conflict between the Create and Clockwork mods. The Create mod is trying to load a mixin for the Clockwork mod, but the Clockwork mod is not present in the mod list. This is causing the Create mod to fail to load.

Solution

To fix this issue, you need to remove the Clockwork mod from the mod list and add it as a dependency to the Create mod. This will allow the Create mod to load the mixin for the Clockwork mod correctly.

Conclusion

The Create and Clockwork mod is failing to load in Minecraft 1.20.x with the Forge mod loader due to a conflict between the two mods. To fix this issue, you need to remove the Clockwork mod from the mod list and add it as a dependency to the Create mod.

System Details

The system details are as follows:

  • Minecraft Version: 1.20.1
  • Minecraft Version ID: 1.20.1
  • Operating System: Windows 11 (amd64) version 10.0
  • Java Version: 17.0.8, Microsoft
  • Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
  • Memory: 235778560 bytes (224 MiB) / 952107008 bytes (908 MiB) up to 4294967296 bytes (4096 MiB)
  • CPUs: 8
  • Processor Vendor: GenuineIntel
  • Processor Name: Intel(R) Core(TM) i5-10300H CPU @ 2.50GHz
  • Identifier: Intel64 Family 6 Model 165 Stepping 2
  • Microarchitecture: unknown
  • Frequency (GHz): 2.50
  • Number of physical packages: 1
  • Number of physical CPUs: 4
  • Number of logical CPUs: 8
  • Graphics card #0 name: Parsec Virtual Display Adapter
  • Graphics card #0 vendor: Parsec Cloud, Inc.
  • Graphics card #0 VRAM (MB): 0.00
  • Graphics card #0 deviceId: unknown
  • Graphics card #0 versionInfo: DriverVersion=0.45.0.0
  • Graphics card #1 name: NVIDIA GeForce GTX 1050
  • Graphics card #1 vendor: NVIDIA (0x10de)
  • Graphics card #1 VRAM (MB): 3072.00
  • Graphics card #1 deviceId: 0x1c91
  • Graphics card #1 versionInfo: DriverVersion=32.0.15.6119
  • Graphics card #2 name: Intel(R) UHD Graphics
  • Graphics card #2 vendor: Intel Corporation (0x8086)
  • Graphics card #2 VRAM (MB): 1024.00
  • Graphics card #2 deviceId: 0
    Q&A: Mod Create and Clockwork (Valkyrien Skies x create) Failing to Load

Q: What is the issue with the Create and Clockwork mod?

A: The issue is that the Create mod is trying to load a mixin for the Clockwork mod, but the Clockwork mod is not present in the mod list. This is causing the Create mod to fail to load.

Q: What is the cause of the issue?

A: The cause of the issue is a conflict between the Create and Clockwork mods. The Create mod is trying to load a mixin for the Clockwork mod, but the Clockwork mod is not present in the mod list.

Q: How can I fix the issue?

A: To fix the issue, you need to remove the Clockwork mod from the mod list and add it as a dependency to the Create mod. This will allow the Create mod to load the mixin for the Clockwork mod correctly.

Q: What are the system details that are relevant to this issue?

A: The system details that are relevant to this issue are:

  • Minecraft Version: 1.20.1
  • Minecraft Version ID: 1.20.1
  • Operating System: Windows 11 (amd64) version 10.0
  • Java Version: 17.0.8, Microsoft
  • Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
  • Memory: 235778560 bytes (224 MiB) / 952107008 bytes (908 MiB) up to 4294967296 bytes (4096 MiB)
  • CPUs: 8
  • Processor Vendor: GenuineIntel
  • Processor Name: Intel(R) Core(TM) i5-10300H CPU @ 2.50GHz
  • Identifier: Intel64 Family 6 Model 165 Stepping 2
  • Microarchitecture: unknown
  • Frequency (GHz): 2.50
  • Number of physical packages: 1
  • Number of physical CPUs: 4
  • Number of logical CPUs: 8
  • Graphics card #0 name: Parsec Virtual Display Adapter
  • Graphics card #0 vendor: Parsec Cloud, Inc.
  • Graphics card #0 VRAM (MB): 0.00
  • Graphics card #0 deviceId: unknown
  • Graphics card #0 versionInfo: DriverVersion=0.45.0.0
  • Graphics card #1 name: NVIDIA GeForce GTX 1050
  • Graphics card #1 vendor: NVIDIA (0x10de)
  • Graphics card #1 VRAM (MB): 3072.00
  • Graphics card #1 deviceId: 0x1c91
  • Graphics card #1 versionInfo: DriverVersion=32.0.15.6119
  • Graphics card #2 name: Intel(R) UHD Graphics
  • Graphics card #2 vendor: Intel Corporation (0x8086)
  • Graphics card #2 VRAM (MB): 1024.00
  • Graphics card #2 deviceId: 0x9bc4
  • Graphics card #2 versionInfo: DriverVersion=30.0.101.1994

Q: What are the mod details that are relevant to this issue?

A: The mod details that are relevant to this issue are:

  • Mod Name: Create and Clockwork
  • Mod Version: 6.0.4
  • Mod Issue URL: https://github.com/Creators-of-Create/Create/issues
  • Mod File: /C:/Users/tomas/curseforge/minecraft/Instances/valkyrian test/mods/create-1.20.1-6.0.4.jar
  • Failure message: Create (create) has failed to load correctly
  • org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered

Q: What are the crash report details that are relevant to this issue?

A: The crash report details that are relevant to this issue are:

  • Time: 2025-04-19 19:37:23
  • Description: Mod loading error has occurred
  • java.lang.Exception: Mod Loading has failed
  • at net.minecraftforge.logging.CrashReportExtender.dumpModLoadingCrashReport(CrashReportExtender.java:60) ~[forge-1.20.1-47.4.0-universal.jar%23171!/:?] reclassloading
  • at net.minecraftforge.client.loading.ClientModLoader.completeModLoading(ClientModLoader.java:135) ~[forge-1.20.1-47.4.0-universal.jar%23171!/:?] reclassloading
  • at net.minecraft.client.Minecraft.lambda$new$4(Minecraft.java:571) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] remixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A
  • at net.minecraft.Util.m_137521_(Util.java:421) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] reclassloading
  • at net.minecraft.client.Minecraft.lambda$new$5(Minecraft.java:564) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] remixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A
  • at net.minecraftforge.client.loading.ForgeLoadingOverlay.m_88315_(ForgeLoadingOverlay.java:146) ~[forge-1.20.1-47.4.0-universal.jar%23171!/:?] reclassloading
  • at net.minecraft.client.renderer.GameRenderer.m_109093_(GameRenderer.java:954) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] remixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:ponder.mixins.json:client.accessor.GameRendererAccessor,pl:mixin:APP:valkyrienskies-common.mixins.json:client.renderer.MixinGameRenderer,pl:mixin:APP:create.mixins.json:client.GameRendererMixin,pl:mixin:A,pl:runtimedistcleaner:A
  • at net.minecraft.client.Minecraft.m_91383_(Minecraft.java:1146) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] remixin,pl:accesstransformer:B,pl:runtimedistclean:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A
  • at net.minecraft.client.Minecraft.m_91374_(Minecraft.java:718) ~[client-1.20.1-20230612.114412-srg.jar%23166!/:?] remixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:A,pl:runtimedistcleaner:A
  • at net.minecraft.client.main.Main.main(Main.java:218) ~[forge-47.4.0.jar:?] reclassloading,pl:runtimedistcleaner:A
  • at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
  • at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] {}
  • at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
  • at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] {}
  • at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111) ~[fmlloader-1.20.1-47.4.0.jar:?] {}
  • at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.4.0.jar:?] {}
  • at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$makeService$0(CommonClientLaunchHandler.java:25) ~[fmlloader-1.20.1-47.4.0.jar:?] {}
  • at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.9.jar:?] {}
  • at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.9.jar:?] {}
  • at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.9.jar:?] {}
  • at cpw.mods.modlauncher.Launcher.run(Launcher.java:108) ~[modlauncher-10.0.9.jar:?] {}
  • at cpw.mods.modlauncher.Launcher.main(Launcher.java:78) ~[modlauncher-10.0.9.jar:?] {}
  • at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.9.jar:?] {}