A mod crashed on startup!
net.fabricmc.loader.impl.FormattedException: java.lang.RuntimeException: Could not execute entrypoint stage 'preLaunch' due to errors, provided by 'advanced_runtime_resource_pack' at 'net.devtech.arrp.ARRP'!
at net.fabricmc.loader.impl.FormattedException.ofLocalized(FormattedException.java:63)
at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:162)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:68)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:243)
at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:278)
at org.multimc.EntryPoint.listen(EntryPoint.java:143)
at org.multimc.EntryPoint.main(EntryPoint.java:34)
Caused by: java.lang.RuntimeException: Could not execute entrypoint stage 'preLaunch' due to errors, provided by 'advanced_runtime_resource_pack' at 'net.devtech.arrp.ARRP'!
at net.fabricmc.loader.impl.FabricLoaderImpl.lambda$invokeEntrypoints$2(FabricLoaderImpl.java:403)
at net.fabricmc.loader.impl.util.ExceptionUtil.gatherExceptions(ExceptionUtil.java:33)
at net.fabricmc.loader.impl.FabricLoaderImpl.invokeEntrypoints(FabricLoaderImpl.java:401)
at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:160)
... 8 more
Caused by: net.fabricmc.loader.api.EntrypointException: Exception while loading entries for entrypoint 'preLaunch' provided by 'advanced_runtime_resource_pack'
at net.fabricmc.loader.impl.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:56)
at net.fabricmc.loader.impl.FabricLoaderImpl.invokeEntrypoints(FabricLoaderImpl.java:399)
... 9 more
Caused by: java.lang.RuntimeException: Mixin transformation of net.devtech.arrp.ARRP failed
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:427)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.tryLoadClass(KnotClassDelegate.java:323)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:218)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:534)
at java.base/java.lang.Class.forName(Class.java:513)
at net.fabricmc.loader.impl.util.DefaultLanguageAdapter.create(DefaultLanguageAdapter.java:50)
at net.fabricmc.loader.impl.entrypoint.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:124)
at net.fabricmc.loader.impl.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:53)
... 10 more
Caused by: java.lang.NoClassDefFoundError: me/fzzyhmstrs/fzzy_config/config_util/SyncedConfigHelperV1
at knot//me.fzzyhmstrs.particle_core.PcConfig.(PcConfig.kt:35)
at knot//me.fzzyhmstrs.particle_core.plugin.PcConditionTester.isSatisfied(PcConditionTester.java:9)
at knot//me.fallenbreath.conditionalmixin.impl.SimpleRestrictionChecker.checkConditions(SimpleRestrictionChecker.java:154)
at knot//me.fallenbreath.conditionalmixin.impl.SimpleRestrictionChecker.checkRestriction(SimpleRestrictionChecker.java:53)
at knot//me.fallenbreath.conditionalmixin.impl.MemorizedRestrictionChecker.checkRestriction(MemorizedRestrictionChecker.java:30)
at knot//me.fallenbreath.conditionalmixin.api.mixin.RestrictiveMixinConfigPlugin.shouldApplyMixin(RestrictiveMixinConfigPlugin.java:33)
at org.spongepowered.asm.mixin.transformer.PluginHandle.shouldApplyMixin(PluginHandle.java:132)
at org.spongepowered.asm.mixin.transformer.MixinInfo.shouldApplyMixin(MixinInfo.java:987)
at org.spongepowered.asm.mixin.transformer.MixinInfo.readDeclaredTargets(MixinInfo.java:952)
at org.spongepowered.asm.mixin.transformer.MixinInfo.(MixinInfo.java:881)
at org.spongepowered.asm.mixin.transformer.MixinConfig.prepareMixins(MixinConfig.java:933)
at org.spongepowered.asm.mixin.transformer.MixinConfig.prepare(MixinConfig.java:862)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.prepareConfigs(MixinProcessor.java:540)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.select(MixinProcessor.java:462)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.checkSelect(MixinProcessor.java:438)
at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:290)
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)
... 20 more
Caused by: java.lang.ClassNotFoundException: me.fzzyhmstrs.fzzy_config.config_util.SyncedConfigHelperV1
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:226)
at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
... 39 more

What version of Particle Core do you have in the pack? The stacktrace implies 0.1.2 or earlier. Update to the latest and try again.

What version of Particle Core do you have in the pack? The stacktrace implies 0.1.2 or earlier. Update to the latest and try again.

thank you, updating Particle Core did the trick.