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---- Minecraft Crash Report ----
// On the bright side, I bought you a teddy bear!

Time: 5/1/15 7:43 PM
Description: Exception in server tick loop

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.substring(String.java:1954)
at drzhark.customspawner.utils.CMSUtils.parseName(CMSUtils.java:63)
at drzhark.customspawner.environment.EnvironmentSettings.populateSpawnBiomes(EnvironmentSettings.java:732)
at drzhark.customspawner.environment.EnvironmentSettings.updateSettings(EnvironmentSettings.java:259)
at drzhark.customspawner.utils.CMSUtils.addWorldEnvironment(CMSUtils.java:128)
at drzhark.customspawner.EventHooks.structureMapGen(EventHooks.java:196)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_10_EventHooks_structureMapGen_InitMapGenEvent.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.getModdedMapGen(TerrainGen.java:29)
at net.minecraft.world.gen.ChunkProviderGenerate.(ChunkProviderGenerate.java:66)
at net.minecraft.world.WorldType.getChunkGenerator(WorldType.java:149)
at net.minecraft.world.WorldProvider.func_76555_c(WorldProvider.java:66)
at net.minecraft.world.WorldServer.func_72970_h(WorldServer.java:654)
at net.minecraft.world.World.(World.java:245)
at net.minecraft.world.WorldServer.(WorldServer.java:97)
at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:62)
at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:92)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 840336816 bytes (801 MB) / 1012400128 bytes (965 MB) up to 1012400128 bytes (965 MB)
JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms1024M -Xmx1024M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v9.05 FML v7.10.130.1395 Minecraft Forge 10.13.3.1395 5 mods loaded, 5 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
FML{7.10.130.1395} [Forge Mod Loader] (forge-1.7.10-10.13.3.1395-1710ls.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Forge{10.13.3.1395} [Minecraft Forge] (forge-1.7.10-10.13.3.1395-1710ls.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
CustomSpawner{3.3.0} [DrZhark's CustomSpawner] (CustomMobSpawner 3.3.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
MoCreatures{6.3.1} [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v6.3.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
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'