---- Minecraft Crash Report ----
// Why did you do that?

Time: 12-12-16 7:58
Description: Exception in server tick loop

java.lang.NullPointerException
at zs.d(Chunk.java:1259)
at xv.h(World.java:1913)
at aau.a(SourceFile:458)
at im.a(ChunkProviderServer.java:242)
at zs.a(Chunk.java:1239)
at im.c(ChunkProviderServer.java:137)
at il.(PlayerInstance.java:44)
at ik.getOrCreateChunkWatcher(PlayerManager.java:167)
at ik.a(PlayerManager.java:157)
at ik.a(PlayerManager.java:206)
at gm.a(ServerConfigurationManager.java:133)
at gm.c(ServerConfigurationManager.java:176)
at gm.a(ServerConfigurationManager.java:94)
at bdr.b(IntegratedServerListenThread.java:99)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:696)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:592)
at bdo.q(IntegratedServer.java:159)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:499)
at fy.run(SourceFile:856)


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: 1.4.5
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_05, Oracle Corporation
Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 95902296 bytes (91 MB) / 223141888 bytes (212 MB) up to 1013710848 bytes (966 MB)
JVM Flags: 4 total; -Xincgc -Xmx1000m -XX:PermSize=64m -XX:MaxPermSize=128m
AABB Pool Size: 2479 (138824 bytes; 0 MB) allocated, 2479 (138824 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
FML: MCP v7.23 FML v4.5.17.479 Minecraft Forge 6.4.1.430 Optifine OptiFine_1.4.5_HD_U_D7 4 mods loaded, 4 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ExtrabiomesXL [ExtrabiomesXL] (ExtrabiomesXL-universal-1.4.5-3.6.0a.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 295 (16520 bytes; 0 MB) allocated, 295 (16520 bytes; 0 MB) used
Player Count: 1 / 8; [iq['Mystki'/201, l='Copy of New World', x=2253.26, y=123.11, z=6278.08]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'forge,fml'