• while both mods work fine on their own, they don't fancy each other too much...
• game crashes on launch
  have some fresh logs here, good luck !

https://mclo.gs/Zrew9qS

here may be some useful lines
[Render thread/ERROR]: Critical injection failure: LVT in net/minecraft/class_440::method_25426()V has incompatible changes at opcode 90 in callback fabrictailor.mixins.json:client.MSkinCustomizationScreen_SkinButton from mod fabrictailor->@Inject::onInit(Lorg/spongepowered/asm/mixin/injection/callback/CallbackInfo;I)V. Expected: [I] Found: [Ljava/util/List;] Available: [Ljava/util/List;, [Lnet/minecraft/class_1664;, I, I, Lnet/minecraft/class_1664;]

and
java.lang.ExceptionInInitializerError at de.keksuccino.fancymenu.customization.screen.identifier.ScreenIdentifierHandler.isValidIdentifier(ScreenIdentifierHandler.java:44) at de.keksuccino.fancymenu.customization.screen.identifier.ScreenIdentifierHandler.tryFixInvalidIdentifierWithNonUniversal(ScreenIdentifierHandler.java:79) at de.keksuccino.fancymenu.customization.ScreenCustomization.readCustomizableScreensFromFile(ScreenCustomization.java:228) at de.keksuccino.fancymenu.customization.layout.LayoutHandler.reloadLayouts(LayoutHandler.java:58) at de.keksuccino.fancymenu.customization.layout.LayoutHandler.init(LayoutHandler.java:42) at de.keksuccino.fancymenu.customization.ScreenCustomization.init(ScreenCustomization.java:112) at net.minecraft.class_310$class_8764.handler$cfo000$fancymenu$after_construct_FancyMenu(class_310.java:3230) at net.minecraft.class_310$class_8764.<init>(class_310.java:3154) at net.minecraft.class_310.<init>(class_310.java:700) at net.minecraft.client.main.Main.main(Main.java:223) at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:470) at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) at org.prismlauncher.launcher.impl.StandardLauncher.launch(StandardLauncher.java:100) at org.prismlauncher.EntryPoint.listen(EntryPoint.java:129) at org.prismlauncher.EntryPoint.main(EntryPoint.java:70) Caused by: java.lang.RuntimeException: Mixin transformation of net.minecraft.class_440 failed at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:427) at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.tryLoadClass(KnotClassDelegate.java:323) at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:218) at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526) at de.keksuccino.fancymenu.customization.screen.identifier.UniversalScreenIdentifierRegistry.<clinit>(UniversalScreenIdentifierRegistry.java:102) ... 16 more Caused by: org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:392) at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:234) at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClassBytes(MixinTransformer.java:202) at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:422) ... 21 more Caused by: org.spongepowered.asm.mixin.injection.throwables.InjectionError: LVT in net/minecraft/class_440::method_25426()V has incompatible changes at opcode 90 in callback fabrictailor.mixins.json:client.MSkinCustomizationScreen_SkinButton from mod fabrictailor->@Inject::onInit(Lorg/spongepowered/asm/mixin/injection/callback/CallbackInfo;I)V.

have a good day !

I'm pretty sure I can't fix that on my end. It's caused by FabricTailor's MSkinCustomizationScreen_SkinButton mixin class. Probably caused by the LocalCapture in the @Inject of that mixin class.

I am pretty sure there's a better way than capturing the locals with FAILHARD there. Best is to not capture locals at all.

You should open an issue in FabricTailor's GitHub and copy the explaination I wrote above.

it is fixed ! again thank you for the quick response that was great :)

have a nice day !

FabricTailor v2.4.1 seems to have fixed the issue. Does it work now or is it still crashing?