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I recently bought a second minecraft account and run two clients off one computer to play with a friend or my girlfriend via Lan. The player that joins occasionally crashes and gets this report:

---- Minecraft Crash Report ----
// Uh... Did I do that?

Time: 12/12/14 12:03 AM
Description: Saving entity NBT

java.lang.NullPointerException
at drzhark.mocreatures.entity.MoCEntityTameable.func_70014_b(MoCEntityTameable.java:225)
at net.minecraft.entity.Entity.func_70109_d(Entity.java:1588)
at drzhark.mocreatures.MoCTools.isTamed(MoCTools.java:1714)
at drzhark.mocreatures.entity.passive.MoCEntityEnt.attackCritter(MoCEntityEnt.java:160)
at drzhark.mocreatures.entity.passive.MoCEntityEnt.func_70636_d(MoCEntityEnt.java:145)
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1826)
at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:257)
at net.minecraft.world.World.func_72866_a(World.java:2350)
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.client.Minecraft.func_71407_l(Minecraft.java:1921)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:910)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:838)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)


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

-- Head --
Stacktrace:
at drzhark.mocreatures.entity.MoCEntityTameable.func_70014_b(MoCEntityTameable.java:225)

-- Entity being saved --
Details:
Entity Type: MoCreatures.Bunny (drzhark.mocreatures.entity.passive.MoCEntityBunny)
Entity ID: 13224
Entity Name: Bunny
Entity's Exact location: 266.63, 70.00, 152.50
Entity's Block location: World: (266,70,152), Chunk: (at 10,4,8 in 16,9; contains blocks 256,0,144 to 271,255,159), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Entity's Momentum: 0.00, -0.08, 0.00
Stacktrace:
at net.minecraft.entity.Entity.func_70109_d(Entity.java:1588)
at drzhark.mocreatures.MoCTools.isTamed(MoCTools.java:1714)
at drzhark.mocreatures.entity.passive.MoCEntityEnt.attackCritter(MoCEntityEnt.java:160)
at drzhark.mocreatures.entity.passive.MoCEntityEnt.func_70636_d(MoCEntityEnt.java:145)
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1826)
at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:257)
at net.minecraft.world.World.func_72866_a(World.java:2350)
at net.minecraft.world.World.func_72870_g(World.java:2311)

-- Entity being ticked --
Details:
Entity Type: MoCreatures.Ent (drzhark.mocreatures.entity.passive.MoCEntityEnt)
Entity ID: 13210
Entity Name: Ent
Entity's Exact location: 258.97, 71.79, 159.72
Entity's Block location: World: (258,71,159), Chunk: (at 2,4,15 in 16,9; contains blocks 256,0,144 to 271,255,159), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Entity's Momentum: 0.00, -0.23, 0.00
Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:2157)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['Kyokane'/14376, l='MpServer', x=285.53, y=69.62, z=122.23]]
Chunk stats: MultiplayerChunkCache: 441
Level seed: 0
Level generator: ID 04 - BIOMESOP, ver 0. Features enabled: false
Level generator options:
Level spawn location: World: (204,64,252), Chunk: (at 12,4,12 in 12,15; contains blocks 192,0,240 to 207,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 607142 game time, 731912 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: true), thunder time: 0 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 180 total; [EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=397.50, y=88.00, z=368.50], MoCEntityFirefly['Firefly'/933729, l='MpServer', x=225.75, y=67.00, z=41.44], MoCEntityFirefly['Firefly'/933730, l='MpServer', x=246.22, y=64.00, z=40.47], EntityClientPlayerMP['Kyokane'/14376, l='MpServer', x=285.53, y=69.62, z=122.23], MoCEntityOstrich['Ostrich'/13129, l='MpServer', x=162.66, y=69.00, z=175.56], MoCEntitySnake['Snake'/13128, l='MpServer', x=160.50, y=70.00, z=169.94], MoCEntityOstrich['Ostrich'/13131, l='MpServer', x=172.56, y=74.00, z=174.56], MoCEntityOstrich['Ostrich'/13130, l='MpServer', x=173.50, y=75.00, z=178.50], MoCEntityTurkey['Turkey'/13133, l='MpServer', x=160.38, y=75.00, z=209.25], MoCEntityOstrich['Ostrich'/13132, l='MpServer', x=166.09, y=70.00, z=182.91], MoCEntityElephant['Elephant'/13134, l='MpServer', x=167.84, y=68.00, z=216.16], MoCEntityAnt['Ant'/13171, l='MpServer', x=223.50, y=71.00, z=200.50], MoCEntitySnake['Snake'/13174, l='MpServer', x=210.81, y=71.00, z=199.91], MoCEntityElephant['Elephant'/13175, l='MpServer', x=211.69, y=69.00, z=203.34], MoCEntityAnt['Ant'/13172, l='MpServer', x=216.53, y=71.00, z=204.34], MoCEntitySnake['Snake'/13173, l='MpServer', x=219.47, y=72.00, z=197.00], EntityCaveSpider['Cave Spider'/38514, l='MpServer', x=29.16, y=-0.02, z=-14.71], MoCEntitySnake['Snake'/13154, l='MpServer', x=202.41, y=77.00, z=139.63], MoCEntityElephant['Elephant'/13159, l='MpServer', x=200.06, y=64.08, z=223.88], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=397.50, y=88.00, z=368.50], MoCEntitySnake['Snake'/13158, l='MpServer', x=202.34, y=62.53, z=209.78], MoCEntitySnake['Snake'/13157, l='MpServer', x=192.66, y=62.47, z=203.72], MoCEntityElephant['Elephant'/13156, l='MpServer', x=197.38, y=80.00, z=166.31], MoCEntityShark['Shark'/13160, l='MpServer', x=199.78, y=62.00, z=223.25], EntityCaveSpider['Cave Spider'/918267, l='MpServer', x=-29.10, y=-0.07, z=52.30], MoCEntityBunny['Bunny'/914002, l='MpServer', x=226.50, y=65.00, z=86.50], MoCEntitySnail['Snail'/914003, l='MpServer', x=225.97, y=68.00, z=94.66], MoCEntityBunny['Bunny'/914004, l='MpServer', x=219.22, y=68.16, z=98.22], MoCEntitySnake['Snake'/914005, l='MpServer', x=236.50, y=82.00, z=116.16], MoCEntityBird['Bird'/923905, l='MpServer', x=190.94, y=63.00, z=78.78], MoCEntityBird['Bird'/923906, l='MpServer', x=190.97, y=67.00, z=79.03], MoCEntityBunny['Bunny'/916662, l='MpServer', x=223.50, y=65.00, z=86.50], EntityZombie['Zombie'/849427, l='MpServer', x=-6.77, y=-0.03, z=-3.88], EntityZombie['Zombie'/1376522, l='MpServer', x=312.50, y=56.00, z=95.50], MoCEntityOstrich['Ostrich'/13118, l='MpServer', x=158.81, y=69.00, z=170.69], MoCEntityOstrich['Ostrich'/13114, l='MpServer', x=159.69, y=89.00, z=131.97], MoCEntityOstrich['Ostrich'/13113, l='MpServer', x=164.03, y=87.00, z=141.88], MoCEntitySilverSkeleton['SilverSkeleton'/1297956, l='MpServer', x=191.47, y=54.00, z=123.75], MoCEntitySmallFish['SmallFish'/13088, l='MpServer', x=175.80, y=61.09, z=229.89], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=397.50, y=88.00, z=368.50], EntityHat['unknown'/13925581, l='MpServer', x=361.50, y=97.00, z=169.50], EntityHat['unknown'/13925580, l='MpServer', x=360.50, y=102.00, z=175.50], EntityHat['unknown'/13925582, l='MpServer', x=359.50, y=105.00, z=190.50], MoCEntityFlameWraith['FlameWraith'/1307049, l='MpServer', x=374.75, y=30.50, z=118.25], MoCEntityBird['Bird'/13275, l='MpServer', x=333.22, y=73.00, z=99.22], MoCEntityBird['Bird'/13277, l='MpServer', x=333.22, y=75.00, z=101.22], MoCEntityBird['Bird'/13276, l='MpServer', x=330.22, y=74.00, z=100.22], MoCEntityBird['Bird'/1045720, l='MpServer', x=159.50, y=69.00, z=60.34], MoCEntityRaccoon['Raccoon'/13259, l='MpServer', x=309.19, y=69.00, z=199.31], EntityHat['unknown'/13774329, l='MpServer', x=252.25, y=73.00, z=89.50], MoCEntityHorse['WildHorse'/13251, l='MpServer', x=319.50, y=71.00, z=152.50], MoCEntityMole['Mole'/13253, l='MpServer', x=310.31, y=68.00, z=204.13], MoCEntityDuck['Duck'/13254, l='MpServer', x=312.50, y=70.00, z=162.50], MoCEntitySilverSkeleton['SilverSkeleton'/1432544, l='MpServer', x=170.50, y=19.00, z=117.50], MoCEntitySnail['Snail'/870040, l='MpServer', x=244.25, y=81.00, z=122.34], MoCEntityBunny['Bunny'/13310, l='MpServer', x=355.50, y=71.00, z=110.50], MoCEntityBunny['Bunny'/13299, l='MpServer', x=351.50, y=76.00, z=113.50], EntityHat['unknown'/13924009, l='MpServer', x=281.50, y=59.00, z=169.50], MoCEntityMaggot['Maggot'/870039, l='MpServer', x=242.22, y=76.00, z=112.38], EntitySheep['Sheep'/13300, l='MpServer', x=309.16, y=71.00, z=181.63], MoCEntityBunny['Bunny'/920293, l='MpServer', x=199.50, y=66.00, z=72.50], MoCEntityBunny['Bunny'/920294, l='MpServer', x=199.50, y=66.00, z=72.50], MoCEntityBunny['Bunny'/920295, l='MpServer', x=199.50, y=66.00, z=72.50], MoCEntityWerewolf['Werewolf'/1340490, l='MpServer', x=255.16, y=22.00, z=235.53], EntityCaveSpider['Cave Spider'/4352687, l='MpServer', x=-9.33, y=-0.07, z=13.02], EntityHat['unknown'/13792987, l='MpServer', x=278.97, y=62.39, z=51.06], MoCEntityMiniGolem['MiniGolem'/1340482, l='MpServer', x=298.50, y=48.00, z=221.50], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=370.79, y=67.94, z=339.03], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=397.50, y=88.00, z=368.50], MoCEntityCricket['Cricket'/13213, l='MpServer', x=264.47, y=72.00, z=168.94], MoCEntityBoar['Boar'/13212, l='MpServer', x=259.50, y=65.00, z=160.50], EntitySheep['Sheep'/930136, l='MpServer', x=272.53, y=67.00, z=58.63], MoCEntityOstrich['Ostrich'/13214, l='MpServer', x=260.84, y=80.00, z=187.22], MoCEntitySnake['Snake'/13209, l='MpServer', x=258.50, y=70.00, z=155.50], MoCEntityBoar['Boar'/13211, l='MpServer', x=261.31, y=71.00, z=157.38], MoCEntityEnt['Ent'/13210, l='MpServer', x=258.97, y=71.79, z=159.72], EntitySheep['Sheep'/930135, l='MpServer', x=278.97, y=62.39, z=51.06], MoCEntitySnake['Snake'/13201, l='MpServer', x=255.50, y=74.00, z=165.50], MoCEntityOstrich['Ostrich'/13202, l='MpServer', x=245.31, y=67.00, z=235.94], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=397.50, y=88.00, z=368.50], MoCEntitySnake['Snake'/13188, l='MpServer', x=230.16, y=68.00, z=234.94], MoCEntityElephant['Elephant'/13189, l='MpServer', x=237.53, y=66.00, z=246.84], EntityHat['unknown'/197801, l='MpServer', x=355.50, y=96.00, z=185.50], EntityHat['unknown'/197802, l='MpServer', x=356.44, y=104.00, z=186.56], MoCEntityDuck['Duck'/960256, l='MpServer', x=172.34, y=68.00, z=31.28], MoCEntityRaccoon['Raccoon'/13187, l='MpServer', x=228.16, y=78.04, z=175.59], EntityHat['unknown'/13703311, l='MpServer', x=309.16, y=71.00, z=181.63], MoCEntityBoar['Boar'/13246, l='MpServer', x=313.50, y=75.00, z=124.50], MoCEntityBunny['Bunny'/13245, l='MpServer', x=308.50, y=74.00, z=121.50], MoCEntityBee['Bee'/13238, l='MpServer', x=295.59, y=72.00, z=181.19], MoCEntityMole['Mole'/13237, l='MpServer', x=301.47, y=66.00, z=187.63], MoCEntityCricket['Cricket'/13236, l='MpServer', x=281.53, y=71.00, z=168.44], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=397.50, y=88.00, z=368.50], MoCEntityMouse['Mouse'/13231, l='MpServer', x=311.84, y=72.00, z=160.41], MoCEntityBunny['Bunny'/13229, l='MpServer', x=301.50, y=79.00, z=99.50], MoCEntityDragonfly['DragonFly'/13226, l='MpServer', x=276.03, y=73.00, z=166.53], MoCEntityBunny['Bunny'/13224, l='MpServer', x=266.63, y=70.00, z=152.50], MoCEntityCricket['Cricket'/13225, l='MpServer', x=286.13, y=69.00, z=169.66], EntityHat['unknown'/13775925, l='MpServer', x=269.53, y=71.00, z=76.47], MoCEntityBunny['Bunny'/13222, l='MpServer', x=279.50, y=72.00, z=151.50], EntityHat['unknown'/13785131, l='MpServer', x=272.53, y=67.00, z=58.63], EntityHat['unknown'/13775924, l='MpServer', x=246.59, y=67.00, z=75.25], MoCEntityBear['Bear'/13223, l='MpServer', x=282.13, y=70.00, z=149.72], MoCEntityFirefly['Firefly'/13220, l='MpServer', x=273.28, y=71.00, z=96.22], MoCEntityFly['Fly'/13221, l='MpServer', x=261.38, y=68.00, z=134.84], MoCEntityCricket['Cricket'/13216, l='MpServer', x=258.63, y=71.00, z=224.56], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=361.99, y=64.69, z=329.19], MoCEntityAnt['Ant'/13352, l='MpServer', x=373.63, y=74.00, z=115.94], MoCEntityBird['Bird'/13354, l='MpServer', x=375.21, y=69.34, z=189.79], MoCEntityBoar['Boar'/13358, l='MpServer', x=380.56, y=72.00, z=193.59], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=360.31, y=64.00, z=337.94], MoCEntityMole['Mole'/13349, l='MpServer', x=371.50, y=68.00, z=100.84], MoCEntityAnt['Ant'/13348, l='MpServer', x=373.56, y=71.00, z=109.09], MoCEntityDeer['Deer'/13351, l='MpServer', x=370.53, y=73.00, z=126.72], MoCEntityBear['Bear'/13360, l='MpServer', x=377.97, y=69.00, z=238.84], MoCEntityBear['Bear'/13361, l='MpServer', x=377.66, y=69.00, z=240.38], EntityChicken['Chicken'/13315, l='MpServer', x=355.50, y=96.00, z=185.50], EntitySheep['Sheep'/13314, l='MpServer', x=360.50, y=102.00, z=175.50], EntitySheep['Sheep'/13313, l='MpServer', x=361.50, y=97.00, z=169.50], EntityChicken['Chicken'/13319, l='MpServer', x=356.50, y=105.00, z=192.31], MoCEntityBear['Bear'/13318, l='MpServer', x=364.50, y=106.00, z=187.50], EntityChicken['Chicken'/13317, l='MpServer', x=359.50, y=105.00, z=190.50], EntityChicken['Chicken'/13316, l='MpServer', x=356.44, y=104.00, z=186.56], EntitySpider['Spider'/288716, l='MpServer', x=-32.75, y=-0.09, z=-16.70], EntityHat['unknown'/13897, l='MpServer', x=285.53, y=69.62, z=122.23], EntityHat['unknown'/13925861, l='MpServer', x=312.50, y=56.00, z=95.50], MoCEntityDragonfly['DragonFly'/13416, l='MpServer', x=391.50, y=102.00, z=212.50], MoCEntityFirefly['Firefly'/937446, l='MpServer', x=229.78, y=66.00, z=31.94], MoCEntityButterfly['ButterFly'/13413, l='MpServer', x=383.56, y=74.00, z=116.19], MoCEntityButterfly['ButterFly'/937447, l='MpServer', x=233.59, y=66.00, z=26.81], MoCEntityDragonfly['DragonFly'/13415, l='MpServer', x=393.72,
y=87.00, z=218.47], MoCEntityDuck['Duck'/937445, l='MpServer', x=178.50, y=68.00, z=26.50], MoCEntityGoat['Goat'/13414, l='MpServer', x=391.72, y=75.00, z=132.91], EntityCaveSpider['Cave Spider'/5933828, l='MpServer', x=-30.44, y=-0.01, z=37.49], MoCEntityDuck['Duck'/604867, l='MpServer', x=328.28, y=71.00, z=33.78], MoCEntityFox['Fox'/14448, l='MpServer', x=409.81, y=70.00, z=160.34], MoCEntityHorse['WildHorse'/604870, l='MpServer', x=340.50, y=71.00, z=62.50], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=370.50, y=69.00, z=340.69], MoCEntityBunny['Bunny'/14449, l='MpServer', x=406.50, y=110.00, z=187.50], MoCEntityBunny['Bunny'/14450, l='MpServer', x=407.50, y=114.00, z=184.50], MoCEntityHorse['WildHorse'/604868, l='MpServer', x=332.50, y=68.00, z=62.50], MoCEntityBoar['Boar'/604869, l='MpServer', x=333.59, y=69.00, z=49.75], MoCEntityBoar['Boar'/14445, l='MpServer', x=411.63, y=68.00, z=141.50], MoCEntityGoat['Goat'/14444, l='MpServer', x=401.50, y=72.00, z=141.50], MoCEntityBoar['Boar'/941615, l='MpServer', x=311.47, y=69.00, z=18.53], MoCEntityMole['Mole'/14446, l='MpServer', x=404.50, y=70.00, z=152.50], MoCEntityGoat['Goat'/14443, l='MpServer', x=407.09, y=70.00, z=140.94], EntitySkeleton['Skeleton'/1347794, l='MpServer', x=281.50, y=59.00, z=169.50], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=315.13, y=68.00, z=289.34], EntitySpider['Spider'/4247899, l='MpServer', x=13.14, y=-0.07, z=-16.61], EntitySheep['Sheep'/911415, l='MpServer', x=246.59, y=67.00, z=75.25], EntitySheep['Sheep'/911417, l='MpServer', x=269.53, y=71.00, z=76.47], MoCEntityDuck['Duck'/911416, l='MpServer', x=245.53, y=68.00, z=68.28], MoCEntityBird['Bird'/911419, l='MpServer', x=237.22, y=66.00, z=26.22], MoCEntityBunny['Bunny'/911418, l='MpServer', x=319.97, y=63.00, z=72.97], MoCEntityHorse['WildHorse'/911421, l='MpServer', x=331.50, y=68.00, z=65.50], MoCEntitySnake['Snake'/911420, l='MpServer', x=334.50, y=69.00, z=66.50], MoCEntityHorse['WildHorse'/911423, l='MpServer', x=334.50, y=71.00, z=65.88], MoCEntityBoar['Boar'/911422, l='MpServer', x=334.09, y=71.00, z=69.31], EntitySpider['Spider'/243601, l='MpServer', x=-44.62, y=-0.04, z=-31.29], MoCEntityMouse['Mouse'/911428, l='MpServer', x=387.53, y=63.00, z=59.78], EntityOtherPlayerMP['LordLacrimosa'/13567, l='MpServer', x=357.73, y=70.15, z=326.94], MoCEntityBird['Bird'/911424, l='MpServer', x=339.22, y=67.00, z=73.78], MoCEntityGoat['Goat'/911425, l='MpServer', x=381.06, y=63.00, z=78.94], MoCEntityFly['Fly'/907552, l='MpServer', x=268.13, y=72.00, z=86.34], EntityZombie['Zombie'/5448407, l='MpServer', x=0.19, y=-0.00, z=-3.98], MoCEntityBird['Bird'/907555, l='MpServer', x=342.22, y=64.00, z=86.22], MoCEntityBird['Bird'/907554, l='MpServer', x=342.22, y=64.00, z=86.22], MoCEntityMouse['Mouse'/907557, l='MpServer', x=351.56, y=65.00, z=89.69], MoCEntityBird['Bird'/907556, l='MpServer', x=342.22, y=63.13, z=86.22], MoCEntityGoat['Goat'/907558, l='MpServer', x=376.00, y=63.00, z=92.53], EntityHat['unknown'/13904060, l='MpServer', x=356.50, y=105.00, z=192.31], MoCEntityMiniGolem['MiniGolem'/1341906, l='MpServer', x=175.28, y=18.00, z=104.63], MoCEntityBoar['Boar'/907550, l='MpServer', x=243.50, y=71.00, z=92.50], EntityPig['Pig'/907551, l='MpServer', x=252.25, y=73.00, z=89.50], MoCEntityBoar['Boar'/907549, l='MpServer', x=247.50, y=72.00, z=95.50], MoCEntityWerewolf['Werewolf'/1355969, l='MpServer', x=298.88, y=69.00, z=2.81], MoCEntityBoar['Boar'/604863, l='MpServer', x=296.03, y=73.00, z=41.56], MoCEntityBird['Bird'/604862, l='MpServer', x=292.22, y=69.00, z=42.22], MoCEntityDuck['Duck'/604859, l='MpServer', x=302.72, y=72.00, z=22.31]]
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:2312)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:856)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

-- System Details --
Details:
Minecraft Version: 1.6.4
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 340206632 bytes (324 MB) / 791015424 bytes (754 MB) up to 4281597952 bytes (4083 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 2609 (146104 bytes; 0 MB) allocated, 751 (42056 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 4, tallocated: 58
FML: MCP v8.11 FML v6.4.49.965 Minecraft Forge 9.11.1.965 Optifine OptiFine_1.6.4_HD_U_D1 69 mods loaded, 69 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
FML{6.4.49.965} [Forge Mod Loader] (minecraftforge-9.11.1.965.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Forge{9.11.1.965} [Minecraft Forge] (minecraftforge-9.11.1.965.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CodeChickenCore{0.9.0.9} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
NotEnoughItems{1.6.1.9} [Not Enough Items] (NotEnoughItems-1.6.4-1.6.1.9-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
OpenModsCore{0.4} [OpenModsCore] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
threadedlighting{0.1} [Threaded Lighting] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
DamageIndicatorsMod{2.9.2.4} [Damage Indicators] (1.6.4 DamageIndicatorsv2.9.2.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
lucky{4.2.1} [Lucky Block] ([1-6-4]_Lucky_Block_v4-2-1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BetterCrafting{3.0.1} [BetterCrafting] ([1.6.4] BetterCrafting v3.0.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
bspkrsCore{v4.3(1.6.4)} [bspkrsCore] ([1.6.4]bspkrsCorev4.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
mod_bspkrsCore{v4.3(1.6.4)} [bspkrsCore] ([1.6.4]bspkrsCorev4.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
mod_ReiMinimap{v3.4_01 [1.6.2]} [mod_ReiMinimap] ([1.6.4]ReiMinimap_v3.4_01 (1).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
TreeCapitator{Forge 1.6.4.r02} [Treecapitator] ([1.6.4]TreeCapitator.Forge.1.6.4.r02.Universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Agriculture{1.0.0} [Agriculture] (Agriculture-1.6.4-1.2.15.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
AnimatedPlayer{1.3.0} [Animated Player Mod] (Animated_Player_v1.3.0_mc1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
AnimationAPI{1.1.1} [AnimationAPI] (AnimationAPI v1.1.2 mc1.6.4 (1).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Backpack{1.26.29} [Backpack] (backpack-1.26.29-1.6.x.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BiomesOPlenty{1.2.1} [Biomes O' Plenty] (BiomesOPlenty-universal-1.6.4-1.2.1.416.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Core{4.2.2} [BuildCraft] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Builders{4.2.2} [BC Builders] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Energy{4.2.2} [BC Energy] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Factory{4.2.2} [BC Factory] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Transport{4.2.2} [BC Transport] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Silicon{4.2.2} [BC Silicon] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
chococraft{3.0.3} [Torojima's ChocoCraft] (Chococraft_3.0.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CoFHCore{2.0.0.5} [CoFH Core] (CoFHCore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CoFHLoot{2.0.0.5} [CoFH Loot] (CoFHCore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CoFHMasquerade{2.0.0.5} [CoFH Masquerade] (CoFHCore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CoFHSocial{2.0.0.5} [CoFH Social] (CoFHCore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CoFHWorld{2.0.0.5} [CoFH World] (CoFHCore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ComputerCraft{1.58} [ComputerCraft] (ComputerCraft1.58.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CCTurtle{1.58} [ComputerCraft Turtles] (ComputerCraft1.58.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CustomSpawner{3.0.0} [DrZhark's CustomSpawner] (CustomMobSpawner 3.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
MoCreatures{6.1.0} [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v6.1.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
iChunUtil{2.4.0} [iChunUtil] (iChunUtil2.4.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Grinder{2.0.0} [Grinder] (files^AttachableGrinder2.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Hats{2.1.5} [Hats] (Hats2.1.5.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
HatStand{2.1.0} [HatStand] (HatStand2.1.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
JoypadSplitscreenMod{1.6.4-0.0952} [Joypad / SplitScreen Mod] (JoypadMod-1.6.4-0.0952.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
TeNNoX_KeyAndCodeLock{1.3.2} [Key and Code Lock] (Key-and-Code-Lock-Mod-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Lambchops{1.4.3} [Lambchops] (Lambchops-Mod-by-simonki2-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
LycanitesMobs{1.4.3 - MC 1.6.4} [Lycanites Mobs] (LycanitesMobsComplete 1.4.3 [1.6.4].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
DemonMobs{1.4.3 - MC 1.6.4} [Lycanites Demon Mobs] (LycanitesMobsComplete 1.4.3 [1.6.4].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
DesertMobs{1.4.3 - MC 1.6.4} [Lycanites Desert Mobs] (LycanitesMobsComplete 1.4.3 [1.6.4].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ForestMobs{1.4.3 - MC 1.6.4} [Lycanites Forest Mobs] (LycanitesMobsComplete 1.4.3 [1.6.4].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
JungleMobs{1.4.3 - MC 1.6.4} [Lycanites Jungle Mobs] (LycanitesMobsComplete 1.4.3 [1.6.4].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
PlainsMobs{1.4.3 - MC 1.6.4} [Lycanites Plains Mobs] (LycanitesMobsComplete 1.4.3 [1.6.4].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
SwampMobs{1.4.3 - MC 1.6.4} [Lycanites Swamp Mobs] (LycanitesMobsComplete 1.4.3 [1.6.4].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
cfm{3.3.4} [MrCrayfish's Furniture Mod] (MrCrayfishFurnitureModv3.3.4(1.6.4).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
MutantCreatures{1.4.4} [Mutant Creatures] (Mutant_Creatures_v1.4.4_mc1.6.4 (2).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
OpenMods{0.4} [OpenMods] (OpenModsLib-0.4b.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ForgeMultipart{1.0.0.219} [Forge Multipart] (ForgeMultipart-universal-1.6.4-1.0.0.219.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ThermalExpansion{3.0.0.5} [Thermal Expansion] (ThermalExpansion-3.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
OpenPeripheralCore{0.3.3} [OpenPeripheralCore] (OpenPeripheralCore-0.3.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
OpenPeripheral{0.1.3} [OpenPeripheralAddons] (OpenPeripheralAddons-0.1.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
OpenBlocks{1.2.7} [OpenBlocks] (OpenBlocks-1.2.7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
mod_polkzmod{2.0} [mod_polkzmod] (polkzmod2.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
RopesPlus{1.5.4} [Ropes+] (RopePlus_1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
tombstone{0.8.1} [TombStone] (TombStone-1.6.4_0.8.1 (1).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Torched{2.0.0} [Torched] (Torched-Mod-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
adnantheclydetravellinghouse{1.0.0} [Travelling House] (Travelling-House-Mod-1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
TwilightForest{1.20.4} [The Twilight Forest] (twilightforest-1.6.4-1.20.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
weaponmod{1.6.2 v1.13.6} [Balkon's WeaponMod] (WeaponMod.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
TinkersConstructPlugin{0.0} [Xerxes Weapon <3 Tinkers Contruct plugin] (XerxesWeap v1.0.1.3b.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
XW{1.0.1.3} [Xerxes Weapon Mod] (XerxesWeap v1.0.1.3b.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
McMultipart{1.0.0.219} [Minecraft Multipart Plugin] (ForgeMultipart-universal-1.6.4-1.0.0.219.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
MSC{1.6.4.0} [Mob Spawn Controls] (MSC1v1.6.4.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ForgeMicroblock{1.0.0.219} [Forge Microblocks] (ForgeMultipart-universal-1.6.4-1.0.0.219.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Launched Version: 1.6.4-Forge9.11.1.965
LWJGL: 2.9.0
OpenGL: AMD Radeon R9 200 Series GL version 4.4.13084 Compatibility Profile Context 14.301.1001.0, ATI Technologies Inc.
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Pack: ChromaHills-128x_1.6_1.0.6.zip
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 1037 (58072 bytes; 0 MB) allocated, 114 (6384 bytes; 0 MB) used




Any ideas? I'm not great at reading these but it looks like Mo Creatures might be the problem. Or it may be conflicting with something.