Minecraft Forums

Okay, so I love to add different mods to Minecraft and most of the time, whenever I add another mod, Minecraft crashes. I only have about 13-14 mods installed, and my computer is a recent one (a Mac from around 2013, 2014). Anyone happen to know the problem?

I'm using the Forge 1.7.10 Installer, and I'm trying to install the Animals + Mod (I believe that's what it's called).

Here's a list of the mods I use:

-BiblioCraft

-Biomes O' Plenty

-Butterfly Mania

-Damage Indicators

-Decorative Marble Mod

-Fairy Mod

-Pam's Harvestcraft

-Twilight Forest

-VoxelMap

-Witchery

I'm hoping that someday I'll be able to add more without Minecraft crashing.

Crash report:

---- Minecraft Crash Report ----
// My bad.

Time: 5/28/15 9:01 AM
Description: Initializing game

java.lang.IllegalArgumentException: ID is already registered: Butterfly
at net.minecraft.entity.EntityList.func_75618_a(EntityList.java:89)
at net.minecraft.entity.EntityList.func_75614_a(EntityList.java:107)
at cpw.mods.fml.common.registry.EntityRegistry.registerGlobalEntityID(EntityRegistry.java:251)
at clickme.animals.EntityManager.registerEntities(EntityManager.java:86)
at clickme.animals.AnimalsPlus.load(AnimalsPlus.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:513)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:691)
at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:288)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:541)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:867)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at net.minecraft.entity.EntityList.func_75618_a(EntityList.java:89)
at net.minecraft.entity.EntityList.func_75614_a(EntityList.java:107)
at cpw.mods.fml.common.registry.EntityRegistry.registerGlobalEntityID(EntityRegistry.java:251)
at clickme.animals.EntityManager.registerEntities(EntityManager.java:86)
at clickme.animals.AnimalsPlus.load(AnimalsPlus.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:513)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:691)
at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:288)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:541)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:867)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Mac OS X (x86_64) version 10.10.3
Java Version: 1.6.0_65, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 99322248 bytes (94 MB) / 323756032 bytes (308 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 5 total; -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v9.05 FML v7.10.103.1352 Minecraft Forge 10.13.2.1352 14 mods loaded, 14 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
FML{7.10.103.1352} [Forge Mod Loader] (forge-1.7.10-10.13.2.1352-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized
Forge{10.13.2.1352} [Minecraft Forge] (forge-1.7.10-10.13.2.1352-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized
animalsPlus{1.2} [Animals+] (animalsPlus-1.2.jar) Unloaded->Constructed->Pre-initialized->Errored
BiblioCraft{1.7.3} [BiblioCraft] (BiblioCraft-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized
BiomesOPlenty{2.1.0} [Biomes O' Plenty] (BiomesOPlenty-1.7.10-2.1.0.1067-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized
butterflymania{1.2.1} [Butterfly Mania] (butterflymania-1.7.10-1.2.1-2.jar) Unloaded->Constructed->Pre-initialized->Initialized
DamageIndicatorsMod{3.2.0} [Damage Indicators] (Damage-Indicators-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized
decorativemarble{Beta 1.1710.1} [Decorative Marble] (decorativemarble-1.1710.1.jar) Unloaded->Constructed->Pre-initialized->Initialized
fairymod{0.5} [Fairy Mod] (fairymod-0.5-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized
harvestcraft{1.7.10g} [Pam's HarvestCraft] (Pam's HarvestCraft 1.7.10h.jar) Unloaded->Constructed->Pre-initialized->Initialized
TwilightForest{2.3.5} [The Twilight Forest] (twilightforest-1.7.10-2.3.5.jar) Unloaded->Constructed->Pre-initialized->Initialized
voxelmap{1.7.10} [VoxelMap No Radar] (voxelmapNoRadar-1.7.10-1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized
witchery{0.23.2} [Witchery] (witchery-1.7.10-0.23.2.jar) Unloaded->Constructed->Pre-initialized->Initialized
Launched Version: 1.7.10-Forge10.13.2.1352-1.7.10
LWJGL: 2.9.1
OpenGL: AMD Radeon HD 6750M OpenGL Engine GL version 2.1 ATI-1.32.20, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because ARB_framebuffer_object is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

THANK YOU! It finally works. I wasn't aware that there was already a butterfly entity in the Animals + Mod; but thanks SO MUCH all the same.