---- Minecraft Crash Report ----
// But it works on my machine.

Time: 2015.12.29. 11:19
Description: Exception in server tick loop

java.lang.IllegalArgumentException
	at net.minecraft.util.WeightedRandom.getRandomItem(WeightedRandom.java:29)
	at net.minecraft.util.WeightedRandom.getRandomItem(WeightedRandom.java:60)
	at net.minecraft.world.SpawnerAnimals.performWorldGenSpawning(SpawnerAnimals.java:228)
	at net.minecraft.world.gen.ChunkProviderGenerate.populate(ChunkProviderGenerate.java:476)
	at net.minecraft.world.gen.ChunkProviderServer.populate(ChunkProviderServer.java:283)
	at net.minecraft.world.chunk.Chunk.populateChunk(Chunk.java:1156)
	at net.minecraft.world.gen.ChunkProviderServer.originalLoadChunk(ChunkProviderServer.java:187)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:129)
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:99)
	at net.minecraft.server.MinecraftServer.initialWorldChunkLoad(MinecraftServer.java:347)
	at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:110)
	at net.minecraft.server.integrated.IntegratedServer.startServer(IntegratedServer.java:127)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:502)
	at java.lang.Thread.run(Unknown Source)


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

-- System Details --
Details:
	Minecraft Version: 1.8.8
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.8.0_66, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 780247720 bytes (744 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)
	JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	FML: MCP 9.18 Powered by Forge 11.15.0.1650 5 mods loaded, 5 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJAA	mcp{9.18} [Minecraft Coder Pack] (minecraft.jar)
	UCHIJAA	FML{8.0.99.99} [Forge Mod Loader] (forgeSrc-1.8.8-11.15.0.1650-1.8.8.jar)
	UCHIJAA	Forge{11.15.0.1650} [Minecraft Forge] (forgeSrc-1.8.8-11.15.0.1650-1.8.8.jar)
	UCHIJAA	reg{1.0} [RegistryMod] (bin)
	UCHIJAA	tcm{1.0} [TeamCraft Mod 1.8] (bin)
	Loaded coremods (and transformers):
	GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'