crash log

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 7/19/13 11:32 AM
Description: Rendering screen

java.lang.NullPointerException
	at WayofTime.alchemicalWizardry.EnergyBattery.func_77624_a(EnergyBattery.java:47)
	at net.minecraft.item.ItemStack.func_82840_a(ItemStack.java:662)
	at net.minecraft.client.gui.inventory.GuiContainer.func_74184_a(GuiContainer.java:226)
	at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:202)
	at net.minecraft.client.renderer.InventoryEffectRenderer.func_73863_a(SourceFile:31)
	at net.minecraft.client.gui.inventory.GuiInventory.func_73863_a(SourceFile:49)
	at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1036)
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:934)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:826)
	at net.minecraft.client.main.Main.main(SourceFile:101)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:57)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:18)


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

-- Head --
Stacktrace:
	at WayofTime.alchemicalWizardry.EnergyBattery.func_77624_a(EnergyBattery.java:47)
	at net.minecraft.item.ItemStack.func_82840_a(ItemStack.java:662)
	at net.minecraft.client.gui.inventory.GuiContainer.func_74184_a(GuiContainer.java:226)
	at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:202)
	at net.minecraft.client.renderer.InventoryEffectRenderer.func_73863_a(SourceFile:31)
	at net.minecraft.client.gui.inventory.GuiInventory.func_73863_a(SourceFile:49)

-- Screen render details --
Details:
	Screen name: net.minecraft.client.gui.inventory.GuiInventory
	Mouse location: Scaled: (226, 185). Absolute: (452, 109)
	Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [EntityClientPlayerMP['wrothmonk'/319, l='MpServer', x=19.32, y=74.62, z=209.02]]
	Chunk stats: MultiplayerChunkCache: 375
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options:
	Level spawn location: World: (8,64,236), Chunk: (at 8,4,12 in 0,14; contains blocks 0,0,224 to 15,255,239), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 578258 game time, 438566 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
	Forced entities: 114 total; [EntityClientPlayerMP['wrothmonk'/319, l='MpServer', x=19.32, y=74.62, z=209.02], EntityCreeper['Creeper'/258, l='MpServer', x=98.69, y=15.07, z=238.78], EntityPig['Pig'/92, l='MpServer', x=-58.31, y=67.00, z=216.47], EntitySkeleton['Skeleton'/102, l='MpServer', x=-58.50, y=21.00, z=131.50], EntityZombie['Zombie'/103, l='MpServer', x=-51.50, y=60.00, z=161.50], EntityPig['Pig'/108, l='MpServer', x=-48.03, y=77.00, z=180.06], EntityBat['Bat'/106, l='MpServer', x=-52.25, y=50.10, z=185.75], EntityZombie['Zombie'/107, l='MpServer', x=-55.16, y=54.00, z=187.84], EntitySpider['Spider'/104, l='MpServer', x=-51.84, y=14.00, z=189.50], EntitySkeleton['Skeleton'/105, l='MpServer', x=-60.50, y=19.00, z=182.50], EntityPig['Pig'/119, l='MpServer', x=-33.50, y=76.00, z=167.69], EntityCreeper['Creeper'/118, l='MpServer', x=-45.56, y=19.00, z=163.97], EntitySkeleton['Skeleton'/117, l='MpServer', x=-42.50, y=21.00, z=164.50], EntitySkeleton['Skeleton'/127, l='MpServer', x=-33.50, y=43.00, z=194.50], EntitySpider['Spider'/126, l='MpServer', x=-35.41, y=38.00, z=193.03], EntityCreeper['Creeper'/125, l='MpServer', x=-39.28, y=37.00, z=196.84], EntitySlime['Slime'/124, l='MpServer', x=-37.31, y=29.00, z=203.69], EntitySheep['Sheep'/123, l='MpServer', x=-32.19, y=64.00, z=184.59], EntityChicken['Chicken'/122, l='MpServer', x=-36.50, y=79.00, z=178.50], EntityZombie['Zombie'/121, l='MpServer', x=-45.00, y=41.00, z=185.22], EntityBat['Bat'/120, l='MpServer', x=-37.75, y=11.69, z=186.75], EntityChicken['Chicken'/137, l='MpServer', x=-44.50, y=70.00, z=225.50], EntityPig['Pig'/136, l='MpServer', x=-47.84, y=71.00, z=214.03], EntityChicken['Chicken'/138, l='MpServer', x=-45.50, y=70.00, z=225.50], EntityBat['Bat'/141, l='MpServer', x=-17.13, y=15.00, z=144.63], EntityCreeper['Creeper'/143, l='MpServer', x=-18.06, y=54.03, z=154.69], EntitySpider['Spider'/142, l='MpServer', x=-16.75, y=55.00, z=155.28], EntityCreeper['Creeper'/129, l='MpServer', x=-46.50, y=48.00, z=198.50], EntityChicken['Chicken'/128, l='MpServer', x=-32.56, y=62.41, z=205.56], EntitySheep['Sheep'/131, l='MpServer', x=-47.50, y=74.00, z=193.50], EntitySheep['Sheep'/130, l='MpServer', x=-44.50, y=72.00, z=193.50], EntityPig['Pig'/133, l='MpServer', x=-45.69, y=77.00, z=192.50], EntityChicken['Chicken'/132, l='MpServer', x=-42.47, y=75.00, z=196.47], EntityChicken['Chicken'/135, l='MpServer', x=-37.56, y=68.00, z=213.47], EntityPig['Pig'/134, l='MpServer', x=-40.50, y=77.00, z=216.50], EntityCreeper['Creeper'/152, l='MpServer', x=-15.59, y=54.04, z=148.94], EntityCreeper['Creeper'/153, l='MpServer', x=-14.50, y=16.00, z=201.50], EntityChicken['Chicken'/154, l='MpServer', x=-8.50, y=96.00, z=198.50], EntityCreeper['Creeper'/155, l='MpServer', x=-14.31, y=20.00, z=220.91], EntityBat['Bat'/156, l='MpServer', x=-14.28, y=20.01, z=222.63], EntityBat['Bat'/157, l='MpServer', x=-14.17, y=20.81, z=225.25], EntityCreeper['Creeper'/158, l='MpServer', x=-0.50, y=30.00, z=261.50], EntityBat['Bat'/159, l='MpServer', x=5.89, y=11.00, z=140.46], EntityZombie['Zombie'/144, l='MpServer', x=-25.50, y=49.00, z=174.50], EntityBat['Bat'/145, l='MpServer', x=-22.00, y=36.31, z=184.22], EntityCreeper['Creeper'/146, l='MpServer', x=-24.50, y=54.00, z=189.50], EntityChicken['Chicken'/147, l='MpServer', x=-21.19, y=62.51, z=206.02], EntityChicken['Chicken'/148, l='MpServer', x=-23.56, y=62.44, z=209.16], EntitySpider['Spider'/149, l='MpServer', x=-18.88, y=20.00, z=227.28], EntityCreeper['Creeper'/150, l='MpServer', x=-20.50, y=20.00, z=229.50], EntityBat['Bat'/171, l='MpServer', x=1.24, y=64.91, z=168.18], EntityBat['Bat'/170, l='MpServer', x=7.61, y=29.05, z=193.35], EntityBat['Bat'/169, l='MpServer', x=5.24, y=18.70, z=173.34], EntityBat['Bat'/168, l='MpServer', x=12.25, y=27.10, z=189.25], EntityBat['Bat'/175, l='MpServer', x=6.84, y=19.10, z=229.50], EntitySkeleton['Skeleton'/174, l='MpServer', x=16.44, y=22.00, z=215.94], EntityBat['Bat'/173, l='MpServer', x=15.75, y=40.10, z=192.75], EntityBat['Bat'/172, l='MpServer', x=10.72, y=40.10, z=199.75], EntityChicken['Chicken'/163, l='MpServer', x=7.53, y=82.00, z=165.53], EntityBat['Bat'/162, l='MpServer', x=9.18, y=18.08, z=171.45], EntitySkeleton['Skeleton'/161, l='MpServer', x=10.69, y=18.00, z=172.28], EntityZombie['Zombie'/160, l='MpServer', x=13.31, y=28.00, z=154.88], EntitySkeleton['Skeleton'/167, l='MpServer', x=14.50, y=20.00, z=181.69], EntityZombie['Zombie'/166, l='MpServer', x=8.00, y=28.00, z=179.44], EntityChicken['Chicken'/165, l='MpServer', x=15.50, y=98.00, z=161.50], EntityChicken['Chicken'/164, l='MpServer', x=13.53, y=93.00, z=171.41], EntityChicken['Chicken'/186, l='MpServer', x=20.50, y=70.00, z=260.50], EntityChicken['Chicken'/187, l='MpServer', x=19.50, y=70.00, z=257.50], EntityZombie['Zombie'/184, l='MpServer', x=25.56, y=18.00, z=215.56], EntityChicken['Chicken'/185, l='MpServer', x=20.50, y=70.00, z=261.50], EntityBat['Bat'/179, l='MpServer', x=23.00, y=28.10, z=132.66], EntityBat['Bat'/176, l='MpServer', x=11.16, y=19.10, z=248.28], EntityChicken['Chicken'/182, l='MpServer', x=24.72, y=90.00, z=171.88], EntityChicken['Chicken'/183, l='MpServer', x=24.41, y=90.00, z=171.34], EntityChicken['Chicken'/180, l='MpServer', x=16.50, y=87.00, z=158.50], EntityChicken['Chicken'/181, l='MpServer', x=20.44, y=90.00, z=150.47], EntitySquid['Squid'/200, l='MpServer', x=46.28, y=58.41, z=236.06], EntityCreeper['Creeper'/197, l='MpServer', x=46.50, y=25.00, z=185.50], EntityZombie['Zombie'/196, l='MpServer', x=44.31, y=25.00, z=183.75], EntityBat['Bat'/199, l='MpServer', x=44.84, y=47.10, z=199.41], EntityCreeper['Creeper'/198, l='MpServer', x=40.69, y=48.00, z=191.69], EntityZombie['Zombie'/195, l='MpServer', x=45.22, y=25.00, z=183.31], EntityCreeper['Creeper'/194, l='MpServer', x=47.50, y=25.00, z=189.50], EntityCreeper['Creeper'/223, l='MpServer', x=83.13, y=49.00, z=165.78], EntitySquid['Squid'/216, l='MpServer', x=59.69, y=56.91, z=204.53], EntityChicken['Chicken'/217, l='MpServer', x=59.53, y=64.00, z=227.53], EntityZombie['Zombie'/212, l='MpServer', x=56.28, y=42.00, z=197.81], EntitySkeleton['Skeleton'/213, l='MpServer', x=62.50, y=42.00, z=205.50], EntityCreeper['Creeper'/214, l='MpServer', x=55.50, y=46.00, z=207.50], EntitySquid['Squid'/215, l='MpServer', x=60.50, y=59.97, z=196.50], EntitySkeleton['Skeleton'/209, l='MpServer', x=54.50, y=42.00, z=164.88], EntityZombie['Zombie'/210, l='MpServer', x=62.50, y=15.00, z=202.50], EntityCreeper['Creeper'/211, l='MpServer', x=61.00, y=36.00, z=192.56], EntityCreeper['Creeper'/239, l='MpServer', x=81.50, y=34.00, z=167.50], EntityPig['Pig'/234, l='MpServer', x=78.50, y=70.00, z=249.31], EntityPig['Pig'/233, l='MpServer', x=78.50, y=68.00, z=241.50], EntityChicken['Chicken'/232, l='MpServer', x=76.50, y=73.00, z=240.50], EntityChicken['Chicken'/231, l='MpServer', x=67.50, y=73.00, z=243.50], EntityPig['Pig'/230, l='MpServer', x=72.41, y=69.00, z=238.53], EntityBat['Bat'/229, l='MpServer', x=67.89, y=14.00, z=224.55], EntityZombie['Zombie'/228, l='MpServer', x=70.50, y=17.00, z=209.50], EntitySquid['Squid'/227, l='MpServer', x=74.25, y=59.31, z=200.38], EntityEnderman['Enderman'/226, l='MpServer', x=63.25, y=44.00, z=202.31], EntityCreeper['Creeper'/225, l='MpServer', x=74.50, y=51.00, z=166.50], EntityCreeper['Creeper'/224, l='MpServer', x=75.50, y=51.00, z=166.50], EntityPig['Pig'/248, l='MpServer', x=80.50, y=67.00, z=243.50], EntityZombie['Zombie'/246, l='MpServer', x=93.50, y=37.00, z=221.50], EntityZombie['Zombie'/247, l='MpServer', x=97.38, y=22.00, z=224.50], EntityCreeper['Creeper'/244, l='MpServer', x=87.59, y=42.00, z=184.00], EntityZombie['Zombie'/245, l='MpServer', x=95.53, y=39.00, z=222.34], EntityCreeper['Creeper'/242, l='MpServer', x=91.50, y=48.00, z=172.50], EntityZombie['Zombie'/243, l='MpServer', x=93.50, y=48.00, z=162.94], EntityZombie['Zombie'/240, l='MpServer', x=91.50, y=48.00, z=171.50], EntityCreeper['Creeper'/241, l='MpServer', x=92.50, y=48.00, z=171.50]]
	Retry entities: 0 total; []
	Server brand: fml,forge
	Server type: Non-integrated multiplayer server
Stacktrace:
	at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:440)
	at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2298)
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:844)
	at net.minecraft.client.main.Main.main(SourceFile:101)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:57)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:18)

-- System Details --
Details:
	Minecraft Version: 1.6.2
	Operating System: Mac OS X (x86_64) version 10.8.4
	Java Version: 1.6.0_51, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 65696440 bytes (62 MB) / 176001024 bytes (167 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 16676 (933856 bytes; 0 MB) allocated, 1497 (83832 bytes; 0 MB) used
	Suspicious classes: FML and Forge are installed
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP v8.04 FML v6.2.19.789 Minecraft Forge 9.10.0.789 6 mods loaded, 6 mods active
	mcp{8.04} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	FML{6.2.19.789} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	Forge{9.10.0.789} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	AWWayofTime{Alpha 0.2.0c} [Blood Magic: Alchemical Wizardry] (Blood Magic v0.2.1c.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	AS_Minions{1.6.8} [Minions] (Minions_1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	AS_UpdateCheck{1.1.0} [AtomicStryker Update Check Mod] (UpdateCheckerMod_1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
	Launched Version: 1.6.2-Forge9.10.0.789
	LWJGL: 2.9.0
	OpenGL: NVIDIA GeForce GT 650M OpenGL Engine GL version 2.1 NVIDIA-8.12.47 310.40.00.05f01, NVIDIA Corporation
	Is Modded: Definitely; Client brand changed to 'fml,forge'
	Type: Client (map_client.txt)
	Resource Pack: Razulcraft 16p-converted-1373905382338
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 2114 (118384 bytes; 0 MB) allocated, 563 (31528 bytes; 0 MB) used