java.lang.NullPointerException: Unexpected error
at net.minecraft.client.network.NetHandlerPlayClient.func_147281_a(NetHandlerPlayClient.java:744)
at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:97)
at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:15)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)
at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1591)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:962)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887)
at net.minecraft.client.main.Main.main(SourceFile:148)
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:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Stacktrace:
at net.minecraft.client.network.NetHandlerPlayClient.func_147281_a(NetHandlerPlayClient.java:744)
at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:97)
at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:15)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)
at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273)
Well, I would say some of the mods you are using are causing a mob to spawn that the client is not able to render. I can't see the exact problem from the log. Are you using a modpack? If not, could you just post a list of the mods you are using?
I always wonder how people manage failing to notice the huge mod list included in every crash report ...
I would rather him just post a list rather than try to sort through all that. I think it would be a bit odd if I could tell him a likely problem and not be able to see that there is a list of mods there.
EDIT: To the original poster, does this ever happen when you are in a certain place or dimension? Because what is most likely happening is that the game can't handle the mob that spawns.
Turns out you guys were right. I just decided to uninstall orespawn because I've played it way to many times and it suddenly started working so yeah, thanks for the help
Rollback Post to RevisionRollBack
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---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!
Time: 1/26/15 9:12 PM
Description: Unexpected error
java.lang.NullPointerException: Unexpected error
at net.minecraft.client.network.NetHandlerPlayClient.func_147281_a(NetHandlerPlayClient.java:744)
at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:97)
at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:15)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)
at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1591)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:962)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887)
at net.minecraft.client.main.Main.main(SourceFile:148)
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:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Stacktrace:
at net.minecraft.client.network.NetHandlerPlayClient.func_147281_a(NetHandlerPlayClient.java:744)
at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:97)
at net.minecraft.network.play.server.S0FPacketSpawnMob.func_148833_a(SourceFile:15)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)
at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273)
-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['RMH121212'/418, l='MpServer', x=135.26, y=75.62, z=253.69]]
Chunk stats: MultiplayerChunkCache: 430, 439
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (148,64,248), Chunk: (at 4,4,8 in 9,15; contains blocks 144,0,240 to 159,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 315 game time, 315 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: 101 total; [EntityCreeper['Creeper'/1129, l='MpServer', x=171.50, y=33.00, z=257.50], EntityCreeper['Creeper'/1125, l='MpServer', x=176.50, y=31.00, z=252.50], EntityCreeper['Creeper'/1122, l='MpServer', x=175.50, y=31.00, z=253.50], EntityRocketCreeper['Rocket Creeper'/1055, l='MpServer', x=198.50, y=17.00, z=257.91], EntityCreeper['Creeper'/1070, l='MpServer', x=174.50, y=31.00, z=254.50], EntityWitch['Witch'/1060, l='MpServer', x=96.50, y=21.00, z=326.50], EntitySpider['Spider'/1072, l='MpServer', x=76.03, y=37.00, z=175.72], EntityZombie['Zombie'/1243, l='MpServer', x=80.50, y=37.00, z=176.50], EntityPig['Pig'/175, l='MpServer', x=64.53, y=64.00, z=210.19], EntityPig['Pig'/174, l='MpServer', x=63.22, y=64.00, z=211.78], EntityPig['Pig'/173, l='MpServer', x=60.50, y=64.00, z=207.50], EntityPig['Pig'/172, l='MpServer', x=57.50, y=64.00, z=209.50], EntityPig['Pig'/186, l='MpServer', x=59.50, y=64.00, z=298.50], EntityPig['Pig'/178, l='MpServer', x=69.50, y=67.00, z=219.19], EntityPig['Pig'/179, l='MpServer', x=68.50, y=66.00, z=217.50], EntityPig['Pig'/176, l='MpServer', x=67.50, y=71.00, z=223.50], EntityPig['Pig'/177, l='MpServer', x=69.50, y=67.00, z=220.78], EntityAdventurer['Adventurer'/180, l='MpServer', x=71.50, y=66.00, z=266.50], EntityAdventurer['Adventurer'/181, l='MpServer', x=70.50, y=67.00, z=268.50], EntityPig['Pig'/205, l='MpServer', x=94.50, y=65.00, z=309.50], EntityPig['Pig'/207, l='MpServer', x=93.19, y=65.00, z=307.50], EntityPig['Pig'/206, l='MpServer', x=94.78, y=65.00, z=307.50], EntityPig['Pig'/216, l='MpServer', x=109.91, y=67.00, z=286.47], EntityPig['Pig'/212, l='MpServer', x=100.53, y=66.00, z=319.75], EntityPig['Pig'/213, l='MpServer', x=104.50, y=67.00, z=285.50], EntityPig['Pig'/214, l='MpServer', x=109.38, y=67.00, z=282.16], EntityPig['Pig'/215, l='MpServer', x=106.84, y=67.00, z=285.63], EntityPig['Pig'/208, l='MpServer', x=93.50, y=65.00, z=305.50], EntityPig['Pig'/209, l='MpServer', x=99.22, y=66.00, z=315.50], EntityPig['Pig'/210, l='MpServer', x=102.50, y=67.00, z=319.50], EntityPig['Pig'/211, l='MpServer', x=102.50, y=67.00, z=317.50], EntityPig['Pig'/233, l='MpServer', x=146.50, y=68.00, z=282.38], EntityPig['Pig'/232, l='MpServer', x=146.50, y=68.00, z=281.22], EntityPig['Pig'/231, l='MpServer', x=152.88, y=69.00, z=282.63], EntityPig['Pig'/230, l='MpServer', x=133.94, y=67.00, z=280.94], EntityBlockling['Blockling'/228, l='MpServer', x=125.44, y=72.00, z=256.72], EntityPig['Pig'/227, l='MpServer', x=131.09, y=73.00, z=255.63], EntityPig['Pig'/226, l='MpServer', x=130.19, y=73.00, z=257.88], EntityPig['Pig'/225, l='MpServer', x=126.50, y=73.00, z=255.50], EntityPig['Pig'/224, l='MpServer', x=133.16, y=74.00, z=256.03], EntityPig['Pig'/275, l='MpServer', x=202.53, y=64.00, z=215.78], EntityPig['Pig'/274, l='MpServer', x=202.50, y=64.00, z=212.50], EntityPig['Pig'/273, l='MpServer', x=201.22, y=64.00, z=215.50], EntityPig['Pig'/276, l='MpServer', x=203.78, y=64.00, z=214.19], EntityItem['item.tile.flower2.oxeyeDaisy'/3530, l='MpServer', x=91.69, y=66.13, z=233.66], EntityPig['Pig'/259, l='MpServer', x=189.50, y=66.00, z=211.50], EntityPig['Pig'/262, l='MpServer', x=189.50, y=64.00, z=202.50], EntityChicken['Chicken'/263, l='MpServer', x=184.50, y=64.00, z=308.50], EntityPig['Pig'/260, l='MpServer', x=187.50, y=65.00, z=208.50], EntityPig['Pig'/261, l='MpServer', x=189.50, y=64.00, z=206.50], EntityChicken['Chicken'/266, l='MpServer', x=184.50, y=64.00, z=305.50], EntityChicken['Chicken'/264, l='MpServer', x=184.50, y=64.00, z=307.50], EntityChicken['Chicken'/265, l='MpServer', x=186.50, y=66.00, z=305.50], EntityItem['item.item.seeds'/3558, l='MpServer', x=94.06, y=65.13, z=230.89], EntitySkeleton['Skeleton'/1399, l='MpServer', x=83.50, y=13.00, z=332.50], EntitySquid['Squid'/440, l='MpServer', x=197.91, y=62.31, z=267.66], EntityAnt['Ant'/3425, l='MpServer', x=155.50, y=68.00, z=255.50], EntityAnt['Ant'/3426, l='MpServer', x=155.50, y=68.00, z=255.50], EntityClientPlayerMP['RMH121212'/418, l='MpServer', x=135.26, y=75.62, z=253.69], EntityFestiveCreeper['Festive Creeper'/1411, l='MpServer', x=194.50, y=16.00, z=241.50], EntityFestiveCreeper['Festive Creeper'/1410, l='MpServer', x=195.50, y=16.00, z=243.50], EntitySkeleton['Skeleton'/1408, l='MpServer', x=174.50, y=33.00, z=259.50], EntityHauntedTool['Haunted Tool'/1414, l='MpServer', x=185.50, y=20.00, z=253.50], EntityFestiveCreeper['Festive Creeper'/1412, l='MpServer', x=196.66, y=16.00, z=242.36], EntityCreeper['Creeper'/450, l='MpServer', x=187.50, y=19.00, z=250.50], EntityRocketCreeper['Rocket Creeper'/449, l='MpServer', x=210.50, y=16.00, z=257.50], EntityLostMiner['Lost Miner'/502, l='MpServer', x=184.50, y=15.00, z=334.50], EntityDMimic['Mimic Chest'/503, l='MpServer', x=91.50, y=18.00, z=235.50], Lizard['Lizard'/489, l='MpServer', x=173.59, y=61.93, z=286.78], Lizard['Lizard'/488, l='MpServer', x=175.47, y=61.96, z=285.97], Frog['Frog'/491, l='MpServer', x=171.25, y=62.00, z=282.38], Lizard['Lizard'/490, l='MpServer', x=183.20, y=64.00, z=302.80], EntityItem['item.tile.flower2.oxeyeDaisy'/1641, l='MpServer', x=92.19, y=65.13, z=227.88], EntityCreeper['Creeper'/1634, l='MpServer', x=69.50, y=13.00, z=328.50], EntityCreeper['Creeper'/1633, l='MpServer', x=70.50, y=13.00, z=328.50], ZombieHungry['entity.HostileWorlds.HungryZombie.name'/1663, l='MpServer', x=98.71, y=68.00, z=259.70], EntityZombie['Zombie'/1662, l='MpServer', x=197.35, y=17.00, z=243.31], EntityDMimic['Mimic Chest'/1660, l='MpServer', x=203.50, y=19.00, z=303.50], EntityZombie['Zombie'/1614, l='MpServer', x=90.50, y=18.00, z=235.50], ZombieClawer['entity.HostileWorlds.ClawingZombie.name'/527, l='MpServer', x=111.22, y=28.00, z=160.22], EntityFestiveCreeper['Festive Creeper'/528, l='MpServer', x=193.69, y=16.00, z=244.69], EntityCreeper['Creeper'/1630, l='MpServer', x=107.50, y=47.00, z=287.50], EntityCreeper['Creeper'/537, l='MpServer', x=77.50, y=41.00, z=265.50], EntitySpider['Spider'/1588, l='MpServer', x=192.13, y=16.00, z=243.13], ZombieClawer['entity.HostileWorlds.ClawingZombie.name'/577, l='MpServer', x=103.50, y=72.00, z=142.50], EntityZombie['Zombie'/1550, l='MpServer', x=172.50, y=33.00, z=255.50], EntityTreasureSlime['Treasure Slime'/1553, l='MpServer', x=208.50, y=19.00, z=299.50], EntityZombie['Zombie'/1552, l='MpServer', x=173.50, y=33.00, z=250.50], EntityTrail['unknown'/2759, l='MpServer', x=135.26, y=75.62, z=253.69], l['unknown'/2614, l='MpServer', x=0.00, y=0.00, z=0.00], ZombieHungry['entity.HostileWorlds.HungryZombie.name'/1664, l='MpServer', x=121.72, y=72.16, z=235.48], EntityZombie['Zombie'/1687, l='MpServer', x=91.50, y=14.00, z=305.50], EntitySpider['Spider'/3594, l='MpServer', x=189.50, y=16.00, z=244.50], EntityCreeper['Creeper'/1692, l='MpServer', x=167.25, y=13.00, z=263.00], EntityDMimic['Mimic Chest'/1693, l='MpServer', x=205.50, y=19.00, z=299.50], EntityCreeper['Creeper'/1688, l='MpServer', x=170.34, y=13.00, z=257.94], EntityCreeper['Creeper'/1690, l='MpServer', x=166.44, y=13.00, z=267.50], EntityCreeper['Creeper'/1691, l='MpServer', x=169.16, y=13.00, z=263.50], EntityZombie['Zombie'/908, l='MpServer', x=77.50, y=37.00, z=175.50], ZombieHungry['entity.HostileWorlds.HungryZombie.name'/963, l='MpServer', x=138.01, y=74.00, z=246.03], ZombieHungry['entity.HostileWorlds.HungryZombie.name'/961, l='MpServer', x=138.80, y=74.00, z=246.80]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:373)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2433)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:916)
at net.minecraft.client.main.Main.main(SourceFile:148)
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:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_45, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 577107568 bytes (550 MB) / 1073217536 bytes (1023 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.05 FML v7.10.85.1230 Minecraft Forge 10.13.2.1230 Optifine OptiFine_1.7.10_HD_B4 44 mods loaded, 44 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.10.85.1230} [Forge Mod Loader] (forge-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.13.2.1230} [Minecraft Forge] (forge-1.7.10-10.13.2.1230.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CodeChickenCore{1.0.4.29} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
NotEnoughItems{1.0.3.74} [Not Enough Items] (Not-Enough-Items-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
lucky{5.1.0} [Lucky Block] ([1-7-10]_Lucky_Block_v5-1-0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FLabsBF{4.1.2} [Better Furnaces] ([1.7.10]Better_Furnaces_V4.1.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DamageIndicatorsMod{3.2.0} [Damage Indicators] ([1.7.10]DamageIndicatorsMod-3.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
heart{2.0.1} [Heart Health] ([MC1.7.10]God Item-2.0.1.54_R.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI-1.7.10-1.2.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
B0bGrowsOre{2.1.0} [B0bGary's Growable Ores] (B0bGary's Growable Ores-2.1.0 for 1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Backpack{2.0.1} [Backpack] (backpack-2.0.1-1.7.x.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BattleTowers{1.5.1} [Battle Towers] (BattleTowers-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
blocklings{2.1.1} [Blocklings] (Blocklings-v2.1.1-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
kegare.caveworld{1.8.3} [Caveworld] (Caveworld_1.7.10-v1.8.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildMod{v1.0} [Build Mod] (CoroUtil-1.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CoroAI{v1.0} [CoroAI] (CoroUtil-1.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ExtendedRenderer{v1.0} [Extended Renderer] (CoroUtil-1.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ConfigMod{v1.0} [Extended Mod Config] (CoroUtil-1.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
props{1.11} [Decocraft] (Decocraft-v1.11_1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
diversity{ALPHA 1.5} [Diversity] (Diversity-1.7.10-Alpha-1.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
eplus{3.0.2-d} [Enchanting Plus] (EnchantingPlus-1.7.10-3.0.2-d.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
GraveStone{2.11.3} [GraveStone] (GraveStone-2.11.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
HardcoreEnderExpansion{1.7} [Hardcore Ender Expansion] (HardcoreEnderExpansion MC-1.7.10 v1.7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
HostileWorlds{0.5.0} [Hostile Worlds] (HostileWorlds-0.5.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
iChunUtil{4.1.3} [iChunUtil] (iChunUtil-4.1.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
IronChest{6.0.62.742} [Iron Chest] (ironchest-1.7.10-6.0.62.742-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ISM{5.2.2} [MaggiCraft's Instant Structures Mod] (ism-5.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
more{5.0} [Christmas M-Ore mod] (M-Ore 5.0 Christmas.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mazemod{1.2.5} [Maze Mod] (mazemod-1.2.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Morph{0.9.1} [Morph] (Morph-Beta-0.9.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
MutantCreatures{1.4.8} [Mutant Creatures] (MutantCreatures-1.7.10-1.4.8.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
OreSpawn{1.7.10.20.2} [OreSpawn] (orespawn-1.7.10-20.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
pandorasbox{2.0.1} [Pandora's Box] (PandorasBox-2.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ParticleMan{v1.0} [Particle Man] (ParticleMan-1.4.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
cuchaz.powerTools{1.7.10-1.3} [Power Tools] (powerTools-v1.7.10-1.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
primitivemobs{1.0} [Primitive Mobs] (primitivemobs-1.0c-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
gibby_pun{1.5} [The Ultimate Pun Mod!] (PunMod 1.7.10-1.5.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
shinyfood{1.5} [ShinyFood] (shinyfood-1.7.10-v1.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RioVII{v1.1.3} [The Mists of RioV II] (The Mists of RioV II - v1.1.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
toolsdoneright{1.1.4} [Tools Done Right] (Tools Done Right by NukeDuck [1.7.10][1.1.4].zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TwilightForest{2.3.2} [The Twilight Forest] (twilightforest-1.7.10-2.3.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AS_UpdateCheck{1.1.6} [AtomicStryker Update Check Mod] (UpdateCheckerMod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
weather2{v2.3.4} [weather2] (Weather-2.3.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Launched Version: 1.7.10
LWJGL: 2.9.1
OpenGL: AMD Radeon HD 7450 GL version 4.2.11476 Compatibility Profile Context, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: [faithful32pack.zip]
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)
I would rather him just post a list rather than try to sort through all that. I think it would be a bit odd if I could tell him a likely problem and not be able to see that there is a list of mods there.
EDIT: To the original poster, does this ever happen when you are in a certain place or dimension? Because what is most likely happening is that the game can't handle the mob that spawns.