After requesting a child to do a farming chore, the game has crashed, and the world has not been working since.

---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 2/28/14 11:45 PM
Description: Ticking entity

java.lang.ClassCastException: net.minecraft.item.ItemSeeds cannot be cast to java.lang.Integer
at mca.chore.ChoreFarming.initializeCreateFarm(ChoreFarming.java:366)
at mca.chore.ChoreFarming.beginChore(ChoreFarming.java:170)
at mca.entity.AbstractEntity.updateChores(AbstractEntity.java:2784)
at mca.entity.AbstractEntity.func_70071_h_(AbstractEntity.java:290)
at mca.entity.AbstractChild.func_70071_h_(AbstractChild.java:50)
at mca.entity.EntityPlayerChild.func_70071_h_(EntityPlayerChild.java:253)
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.chore.ChoreFarming.initializeCreateFarm(ChoreFarming.java:366)
at mca.chore.ChoreFarming.beginChore(ChoreFarming.java:170)
at mca.entity.AbstractEntity.updateChores(AbstractEntity.java:2784)
at mca.entity.AbstractEntity.func_70071_h_(AbstractEntity.java:290)
at mca.entity.AbstractChild.func_70071_h_(AbstractChild.java:50)
at mca.entity.EntityPlayerChild.func_70071_h_(EntityPlayerChild.java:253)
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.EntityPlayerChild (mca.entity.EntityPlayerChild)
Entity ID: 211
Entity Name: entity.mca.EntityPlayerChild.name
Entity's Exact location: 168.43, 71.00, 10.88
Entity's Block location: World: (168,71,10), Chunk: (at 8,4,10 in 10,0; contains blocks 160,0,0 to 175,255,15), 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: Mokunamia Werld
All players: 1 total; [EntityPlayerMP['10Moku01'/209, l='Mokunamia Werld', x=169.51, y=71.00, z=12.68]]
Chunk stats: ServerChunkCache: 975 Drop: 0
Level seed: 7371670712027594685
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (0,64,256), Chunk: (at 0,4,0 in 0,16; contains blocks 0,0,256 to 15,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 60230 game time, 102962 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 128955 (now: false), thunder time: 164176 (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: 44153224 bytes (42 MB) / 269623296 bytes (257 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 2315 (129640 bytes; 0 MB) allocated, 2315 (129640 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP v9.01-pre FML v7.2.109.1022 Minecraft Forge 10.12.0.1022 7 mods loaded, 7 mods active
mcp{8.09} Minecraft Coder Pack Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.2.109.1022} Forge Mod Loader Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.12.0.1022} Minecraft Forge 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
mccapesextra{1.7.2a} MCCapes Extra Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
voxelmap{1.7.2} VoxelMap Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 391 (21896 bytes; 0 MB) allocated, 391 (21896 bytes; 0 MB) used
Player Count: 1 / 8; [EntityPlayerMP['10Moku01'/209, l='Mokunamia Werld', x=169.51, y=71.00, z=12.68]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

Broken worlds will be restored once Alpha 2 is released.

Ah. Thank you for the reply.

Let's keep this issue open, since technically it still exists. :)