Crash report

---- Minecraft Crash Report ----
// Don't be sad. I'll do better next time, I promise!

Time: 10/15/13 11:08 AM
Description: Ticking entity

java.lang.NullPointerException
	at com.willdabeast509.flintlocks.DistanceHelper.calcDistance(DistanceHelper.java:9)
	at com.willdabeast509.flintlocks.entities.EntityBullet.func_70184_a(EntityBullet.java:83)
	at net.minecraft.entity.projectile.EntityThrowable.func_70071_h_(SourceFile:191)
	at net.minecraft.world.World.func_72866_a(World.java:2350)
	at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:719)
	at net.minecraft.world.World.func_72870_g(World.java:2311)
	at net.minecraft.world.World.func_72939_s(World.java:2157)
	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:550)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:668)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)


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

-- Head --
Stacktrace:
	at com.willdabeast509.flintlocks.DistanceHelper.calcDistance(DistanceHelper.java:9)
	at com.willdabeast509.flintlocks.entities.EntityBullet.func_70184_a(EntityBullet.java:83)
	at net.minecraft.entity.projectile.EntityThrowable.func_70071_h_(SourceFile:191)
	at net.minecraft.world.World.func_72866_a(World.java:2350)
	at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:719)
	at net.minecraft.world.World.func_72870_g(World.java:2311)

-- Entity being ticked --
Details:
	Entity Type: flintlock_guns.Bullet (com.willdabeast509.flintlocks.entities.EntityBullet)
	Entity ID: 37
	Entity Name: entity.flintlock_guns.Bullet.name
	Entity's Exact location: -120.30, 62.53, -314.69
	Entity's Block location: World: (-121,62,-315), Chunk: (at 7,3,5 in -8,-20; contains blocks -128,0,-320 to -113,255,-305), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Entity's Momentum: -2.61, -3.49, 0.81
Stacktrace:
	at net.minecraft.world.World.func_72939_s(World.java:2157)
	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:550)

-- Affected level --
Details:
	Level name: Moss
	All players: 1 total; [EntityPlayerMP['DJ_HyperBass'/29, l='Moss', x=-114.95, y=68.00, z=-316.19]]
	Chunk stats: ServerChunkCache: 1066 Drop: 0
	Level seed: 2822636024224595894
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options:
	Level spawn location: World: (36,64,248), Chunk: (at 4,4,8 in 2,15; contains blocks 32,0,240 to 47,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 1861189 game time, 2008262 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 72803 (now: false), thunder time: 82435 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:668)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)

-- System Details --
Details:
	Minecraft Version: 1.6.4
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.6.0_17, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
	Memory: 99732896 bytes (95 MB) / 312008704 bytes (297 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 397 (22232 bytes; 0 MB) allocated, 397 (22232 bytes; 0 MB) used
	Suspicious classes: FML and Forge are installed
	IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
	FML: MCP v8.11 FML v6.4.20.916 Minecraft Forge 9.11.1.916 6 mods loaded, 6 mods active
	mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	FML{6.4.20.916} [Forge Mod Loader] (minecraftforge-9.11.1.916.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	Forge{9.11.1.916} [Minecraft Forge] (minecraftforge-9.11.1.916.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	CyanSwords{1.9.0} [Cyan Warrior Swords] (Cyan_Warrior_Swords_Mod_v.1.9.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	flintlock_guns{1.6_5} [Flintlock Guns Mod] (Flintlock_Guns_Mod_v1.6_-_MC_1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	rwbyCraft{1.6.2} [RWBY Craft By KelcoK22] (RWBY_C.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 183 (10248 bytes; 0 MB) allocated, 183 (10248 bytes; 0 MB) used
	Player Count: 1 / 8; [EntityPlayerMP['DJ_HyperBass'/29, l='Moss', x=-114.95, y=68.00, z=-316.19]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'