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I am on a MAC and my world has been working perfectly fine ever since i created it, it was even working earlier today. Now, my minecraft crashes when i go to load my world. I made a new world to see if that one would work and it worked perfectly fine. the mods i have installed are

-candycraft version 1.7.10
-ether version 3.0
-necromancy version 1.7.0
-RWBY craft by KelcoK22 version 1.7.2
-SkyrimMC version Aplha_2.2.02
-The Twilight Forest version 2.2.3

Here is the crash report i have received:

---- Minecraft Crash Report ----
// Uh... Did I do that?

Time: 8/16/14 10:28 PM
Description: Unexpected error

java.lang.NoSuchMethodError: net.minecraft.world.World.func_82732_R()Lnet/minecraft/util/Vec3Pool;
at rwby_c.World_Provider_Snowy_Forest.func_76562_b(World_Provider_Snowy_Forest.java:54)
at net.minecraft.world.World.func_72948_g(World.java:1681)
at net.minecraft.client.renderer.EntityRenderer.func_78466_h(EntityRenderer.java:1676)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1154)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1011)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:989)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887)
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:134)
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 rwby_c.World_Provider_Snowy_Forest.func_76562_b(World_Provider_Snowy_Forest.java:54)
at net.minecraft.world.World.func_72948_g(World.java:1681)
at net.minecraft.client.renderer.EntityRenderer.func_78466_h(EntityRenderer.java:1676)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1154)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['nicole_arianna'/295, l='MpServer', x=8.50, y=66.62, z=8.50]]
Chunk stats: MultiplayerChunkCache: 0, 0
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (-32,64,244), Chunk: (at 0,4,4 in -2,15; contains blocks -32,0,240 to -17,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 0 game time, 0 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 1 total; [EntityClientPlayerMP['nicole_arianna'/295, l='MpServer', x=8.50, y=66.62, z=8.50]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:373)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2432)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:916)
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:134)
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 10.9.2
Java Version: 1.6.0_65, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 219245992 bytes (209 MB) / 408547328 bytes (389 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: 12, tallocated: 94
FML: MCP v9.05 FML v7.10.25.1191 Minecraft Forge 10.13.0.1191 9 mods loaded, 9 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.10.25.1191} [Forge Mod Loader] (forge-1.7.10-10.13.0.1191.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.13.0.1191} [Minecraft Forge] (forge-1.7.10-10.13.0.1191.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
candycraftmod{(Alpha)} [CandyCraft] (CandyCraft-1.2.3 (1.7.10).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ether{3.0} [ether] (ether-1.7.10-0.7.13.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
necromancy{1.7.0} [Necromancy] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
rwbyCraft{1.7.2} [RWBY Craft By KelcoK22] (rwby_c_1.7.2_V1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
thexfactor117_skyrimmc{Alpha_2.2.02} [SkyrimMC] (SkyrimMC-1.7.10-Alpha_2.2.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TwilightForest{2.2.3} [The Twilight Forest] (twilightforest-1.7.2-2.2.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Launched Version: 1.7.10-Forge10.13.0.1191
LWJGL: 2.9.1
OpenGL: Intel Iris OpenGL Engine GL version 2.1 INTEL-8.24.12, Intel 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)

I thought it might have something do with my java so i updated it to the lasted version. My world would still crash even after the java update. I don't know much about how to go about problems like this, so if someone could please help me out that would be really great thank you!

Make sure all your mods are the same minecraft version and then use that version.