Clay Soldiers

For some reason whenever I play this game on Forge 1.6.2, I always get this crash telling me something abut Ticking Entities.
---- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 7/2/14 10:11 PM
Description: Ticking entity

java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at sanandreasp.mods.ClaySoldiersMod.entity.EntityClayMan.func_70097_a(EntityClayMan.java:130)
at sanandreasp.mods.ClaySoldiersMod.entity.EntityClayMan.func_70626_be(EntityClayMan.java:242)
at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:1999)
at net.minecraft.entity.EntityLiving.func_70636_d(EntityLiving.java:441)
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1826)
at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:257)
at sanandreasp.mods.ClaySoldiersMod.entity.EntityClayMan.func_70071_h_(EntityClayMan.java:120)
at net.minecraft.entity.Entity.func_70098_U(Entity.java:1864)
at net.minecraft.entity.EntityLivingBase.func_70098_U(EntityLivingBase.java:2075)
at net.minecraft.world.World.func_72866_a(World.java:2346)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:721)
at net.minecraft.world.World.func_72870_g(World.java:2311)
at net.minecraft.world.World.func_72866_a(World.java:2409)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:721)
at net.minecraft.world.World.func_72870_g(World.java:2311)
at net.minecraft.world.World.func_72939_s(World.java:2157)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:552)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:666)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:585)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:582)


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

-- Head --
Stacktrace:
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at sanandreasp.mods.ClaySoldiersMod.entity.EntityClayMan.func_70097_a(EntityClayMan.java:130)
at sanandreasp.mods.ClaySoldiersMod.entity.EntityClayMan.func_70626_be(EntityClayMan.java:242)
at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:1999)
at net.minecraft.entity.EntityLiving.func_70636_d(EntityLiving.java:441)
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1826)
at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:257)
at sanandreasp.mods.ClaySoldiersMod.entity.EntityClayMan.func_70071_h_(EntityClayMan.java:120)
at net.minecraft.entity.Entity.func_70098_U(Entity.java:1864)
at net.minecraft.entity.EntityLivingBase.func_70098_U(EntityLivingBase.java:2075)
at net.minecraft.world.World.func_72866_a(World.java:2346)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:721)
at net.minecraft.world.World.func_72870_g(World.java:2311)
at net.minecraft.world.World.func_72866_a(World.java:2409)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:721)
at net.minecraft.world.World.func_72870_g(World.java:2311)

-- Entity being ticked --
Details:
Entity Type: ClaySoldiersMod.CSM_ClayHorse (sanandreasp.mods.ClaySoldiersMod.entity.mount.EntityHorse)
Entity ID: 849
Entity Name: entity.ClaySoldiersMod.CSM_ClayHorse.name
Entity's Exact location: 97.88, 64.00, 243.13
Entity's Block location: World: (97,64,243), Chunk: (at 1,4,3 in 6,15; contains blocks 96,0,240 to 111,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Entity's Momentum: 0.01, -0.08, -0.00
Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:2157)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:552)

-- Affected level --
Details:
Level name: New World
All players: 1 total; [EntityPlayerMP['PhilipAn101'/188, l='New World', x=94.18, y=67.61, z=247.55]]
Chunk stats: ServerChunkCache: 688 Drop: 0
Level seed: -3867200614230570677
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (16,64,236), Chunk: (at 0,4,12 in 1,14; contains blocks 16,0,224 to 31,255,239), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 15920 game time, 15920 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 80750 (now: false), thunder time: 129257 (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:666)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:585)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:582)

-- System Details --
Details:
Minecraft Version: 1.6.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_60, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 85705296 bytes (81 MB) / 231084032 bytes (220 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 1700 (95200 bytes; 0 MB) allocated, 1285 (71960 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
FML: MCP v8.04 FML v6.2.62.871 Minecraft Forge 9.10.1.871 5 mods loaded, 5 mods active
mcp{8.04} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{6.2.62.871} [Forge Mod Loader] (minecraftforge-9.10.1.871.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{9.10.1.871} [Minecraft Forge] (minecraftforge-9.10.1.871.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
SAPManPackCore{1.9.9} [SanAndreasPs Manager Pack CORE edition] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ClaySoldiersMod{2.0.0} [Clay Soldiers Mod] (CSM_v200a.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 7383 (413448 bytes; 0 MB) allocated, 802 (44912 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['PhilipAn101'/188, l='New World', x=94.18, y=67.61, z=247.55]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'