Crash

---- Minecraft Crash Report ----
// I feel sad now :(

Time: 22.12.14 0:08
Description: Exception in server tick loop

java.lang.IllegalArgumentException: Attempted to cancel a uncancelable event
	at cpw.mods.fml.common.eventhandler.Event.setCanceled(Event.java:111)
	at com.dcnick.realitymod.RealEventHandler.GenerateMinable(RealEventHandler.java:11)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler_6_RealEventHandler_GenerateMinable_GenerateMinable.invoke(.dynamic)
	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138)
	at net.minecraftforge.event.terraingen.TerrainGen.generateOre(TerrainGen.java:50)
	at net.minecraft.world.biome.BiomeDecorator.generateOres(BiomeDecorator.java:393)
	at net.minecraft.world.biome.BiomeDecorator.genDecorations(BiomeDecorator.java:154)
	at net.minecraft.world.biome.BiomeDecorator.decorateChunk(BiomeDecorator.java:145)
	at net.minecraft.world.biome.BiomeGenBase.decorate(BiomeGenBase.java:412)
	at net.minecraft.world.biome.BiomeGenPlains.decorate(BiomeGenPlains.java:96)
	at net.minecraft.world.gen.ChunkProviderGenerate.populate(ChunkProviderGenerate.java:444)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:313)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1157)
	at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:208)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:149)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:119)
	at net.minecraft.server.MinecraftServer.initialWorldChunkLoad(MinecraftServer.java:305)
	at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:79)
	at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:96)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:752)


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

-- System Details --
Details:
	Minecraft Version: 1.7.10
	Operating System: Windows 8.1 (x86) version 6.3
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 870969488 bytes (830 MB) / 1046937600 bytes (998 MB) up to 1046937600 bytes (998 MB)
	JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	FML: MCP v9.05 FML v7.10.85.1230 Minecraft Forge 10.13.2.1230 4 mods loaded, 4 mods active
	mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	FML{7.10.85.1230} [Forge Mod Loader] (forgeSrc-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	Forge{10.13.2.1230} [Minecraft Forge] (forgeSrc-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	realitymod{0.1 BETA} [The Reality Mod] (bin) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'