My game crashed and I'm not sure what it means. If you can, please look at my crash report.---- Minecraft Crash Report ----
// You're mean.
Time: 3/2/14 4:43 PM
Description: Ticking entity
java.lang.IllegalAccessError: tried to access field net.minecraft.entity.ai.EntityAITasks.field_75782_a from class mca.entity.EntityVillagerAdult
at mca.entity.EntityVillagerAdult.addAI(EntityVillagerAdult.java:184)
at mca.entity.AbstractEntity.func_70071_h_(AbstractEntity.java:276)
at mca.entity.EntityVillagerAdult.func_70071_h_(EntityVillagerAdult.java:275)
at net.minecraft.world.World.func_72866_a(World.java:2092)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:672)
at net.minecraft.world.World.func_72870_g(World.java:2055)
at net.minecraft.world.World.func_72939_s(World.java:1907)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:510)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:657)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:568)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:114)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:452)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:705)

A detailed walkthrough of the error, its code path and all known details is as follows:
--------------------------------------------------------------------------------------- -- Head --
Stacktrace:
at mca.entity.EntityVillagerAdult.addAI(EntityVillagerAdult.java:184)
at mca.entity.AbstractEntity.func_70071_h_(AbstractEntity.java:276)
at mca.entity.EntityVillagerAdult.func_70071_h_(EntityVillagerAdult.java:275)
at net.minecraft.world.World.func_72866_a(World.java:2092)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:672)
at net.minecraft.world.World.func_72870_g(World.java:2055)
-- Entity being ticked --
Details:
Entity Type: mca.EntityVillagerAdult (mca.entity.EntityVillagerAdult)
Entity ID: 6528
Entity Name: entity.mca.EntityVillagerAdult.name
Entity's Exact location: 273.50, 71.00, 289.50
Entity's Block location: World: (273,71,289), Chunk: (at 1,4,1 in 17,18; contains blocks 272,0,288 to 287,255,303), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Entity's Momentum: 0.00, -0.08, 0.00
Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:1907)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:510)
-- Affected level --
Details:
Level name: New World
All players: 1 total; [EntityPlayerMP['RyuSennin909'/1212, l='New World', x=271.56, y=71.00, z=288.49]]
Chunk stats: ServerChunkCache: 566 Drop: 0
Level seed: 8374261345730966252
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (240,64,256), Chunk: (at 0,4,0 in 15,16; contains blocks 240,0,256 to 255,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 577 game time, 577 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 88782 (now: false), thunder time: 84969 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:657)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:568)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:114)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:452)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:705)
-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows 8 (x86) version 6.2
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 132579504 bytes (126 MB) / 439250944 bytes (418 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 12578 (704368 bytes; 0 MB) allocated, 5902 (330512 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.01-pre FML v7.2.106.1012 Minecraft Forge 10.12.0.1012 7 mods loaded, 7 mods active
mcp{8.09} Minecraft Coder Pack Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.2.106.1012} Forge Mod Loader Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.12.0.1012} Minecraft Forge Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CustomSpawner{3.2.0.dev.R1} [DrZhark's CustomSpawner](CustomMobSpawner 3.2.0-DEV-R2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
MoCreatures{6.2.0.dev.R1} [DrZhark's Mo'Creatures Mod](DrZharks MoCreatures Mod v6.2.0-DEV-R2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
radixcore{1.0.0} [RadixCore](RadixCore-0.8.0.Alpha MC-1.7.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mca{4.0.0.Alpha} [Minecraft Comes Alive](MCA-4.0.0.Alpha MC-1.7.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 1018 (57008 bytes; 0 MB) allocated, 642 (35952 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['RyuSennin909'/1212, l='New World', x=271.56, y=71.00, z=288.49]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

What were you doing when this crash occurred?

Unable to reproduce.