---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.

Time: 11/18/12 2:05 AM
Description: Exception in server tick loop

java.lang.IllegalArgumentException: Failed to register dimension for id 0, One is already registered
	at net.minecraftforge.common.DimensionManager.registerDimension(DimensionManager.java:66)
	at xcompwiz.mystcraft.MystcraftEventHandler.registerDimensions(MystcraftEventHandler.java:50)
	at xcompwiz.mystcraft.MystcraftEventHandler.handleWorldLoadEvent(MystcraftEventHandler.java:37)
	at net.minecraftforge.event.ASMEventHandler_58_MystcraftEventHandler_handleWorldLoadEvent_Load.invoke(.dynamic)
	at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:35)
	at net.minecraftforge.event.EventBus.post(EventBus.java:103)
	at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:278)
	at hg.c(DedicatedServer.java:153)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:454)
	at fp.run(SourceFile:818)

Relevant Details:
- Minecraft Version: 1.4.2
- Operating System: Linux (amd64) version 2.6.38.2-grsec-xxxx-grs-ipv6-64
- Java Version: 1.7.0_09, Oracle Corporation
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 959841248 bytes (915 MB) / 1029046272 bytes (981 MB) up to 1029046272 bytes (981 MB)
- JVM Flags: 2 total; -Xmx1024M -Xms1024M
- AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- FML: ~ERROR~ NullPointerException: null
- Is Modded: Definitely; 'forge,fml'
- Profiler Position: N/A (disabled)
- Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- Player Count: 0 / 16; []
- World world Entities: 2 total; [qa['Zombie'/0, l='world', x=123.58, y=23.32, z=401.19], pg['item.tile.cloth.brown'/1, l='world', x=120.80, y=37.13, z=410.80]]
- World world Players: 0 total; []
- World world Chunk Stats: ServerChunkCache: 1 Drop: 0
- Type: Dedicated Server