[Help] Crashing in LAN play seemingly randomly. - Java Edition Support - Support - Minecraft Forum

#1 Mar 29, 2015

DarkMetaknight

Zombie Killer
Location: Battleship Halberd
Join Date: 6/27/2013
Posts: 772
Location: Dreamland
Minecraft: DarkMetaknight
Member Details

So I've been playing my modpack with a friend, and all seems to go well....ish.

I'm getting seemingly random crashes, and I don't know the cause.

Crash Log (quite long):

---- Minecraft Crash Report ----
// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]

Time: 3/29/15 3:11 PM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at net.minecraft.entity.EntityTracker.func_72788_a(EntityTracker.java:269)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:648)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:186)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

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

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 8.1 (x86) version 6.3
Java Version: 1.8.0_40, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 332577952 bytes (317 MB) / 1010987008 bytes (964 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1024m -XX:MaxPermSize=128m
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP v9.05 FML v7.10.85.1230 Minecraft Forge 10.13.2.1230 Optifine OptiFine_1.7.10_HD_U_B1 55 mods loaded, 55 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
FML{7.10.85.1230} [Forge Mod Loader] (modpack.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
Forge{10.13.2.1230} [Minecraft Forge] (modpack.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
CodeChickenCore{1.0.2.9} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
ivtoolkit{1.0.2} [IvToolkit] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
NotEnoughItems{1.0.2.15} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.2.15-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
PlayerAPI{1.0} [Player API] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
battlegear2{1.0.6.2} [Mine & Blade Battlegear 2 - Bullseye] (1.7.10-MB_Battlegear2-Bullseye-1.0.6.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
zeldaswordskills{1.7.10-2.2.5.b} [Zelda Sword Skills] (1.7.10-zeldaswordskills-2.2.5.b.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
Trapcraft{v2.2.1a} [Trapcraft] ([1.7.10] Trapcraft - v2.3.0a.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->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->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
bspkrsCore{6.15} [bspkrsCore] ([1.7.10]bspkrsCore-universal-6.15.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
FloatingRuins{1.7.10.r02} [FloatingRuins] ([1.7.10]FloatingRuins-universal-1.7.10.r02.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
Treecapitator{1.7.2} [Treecapitator] ([1.7.2]Treecapitator-universal-2.0.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
ArchimedesShips{1.7.10 v1.7.1} [Archimedes' Ships] (ArchimedesShips-1.7.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
atum{0.6} [Atum] (Atum-1.7.10-0.6.34.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
betterstorage{0.10.3.115} [BetterStorage] (BetterStorage-1.7.10-0.10.3.115.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
BiblioCraft{1.8.2} [BiblioCraft] (BiblioCraft[v1.8.2][MC1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
BWG4{1.2.1} [Better World Generation 4] (BWG4-1.2.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
SKC-Core{1.1.2.0} [SKC Core] (SKC-Core-1.1.2.0-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
SKC-CraftableHorseArmor{1.1.2.0} [Craftable Horse Armor] (CraftableHorseArmor-1.1.2.0-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DLDungeonsJBG{1.7.5} [Doomlike Dungeons] (DoomlikeDungeons-1.7.5-MC1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
dungeonpack{1.7.10-1.0} [Dungeon Pack] (dungeonpack-1.7.10-1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DynamicLights{1.3.8} [Dynamic Lights] (DynamicLights-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DynamicLights_onFire{1.0.4} [Dynamic Lights Burning Entity Module] (DynamicLights-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DynamicLights_creepers{1.0.4} [Dynamic Lights Creeper Module] (DynamicLights-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DynamicLights_dropItems{1.0.8} [Dynamic Lights EntityItem Module] (DynamicLights-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DynamicLights_entityClasses{1.0.1} [Dynamic Lights Entity Light Module] (DynamicLights-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DynamicLights_mobEquipment{1.0.8} [Dynamic Lights Mob Equipment Light Module] (DynamicLights-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DynamicLights_flameArrows{1.0.0} [Dynamic Lights Fiery Arrows Light Module] (DynamicLights-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DynamicLights_floodLights{1.0.2} [Dynamic Lights Flood Light] (DynamicLights-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DynamicLights_otherPlayers{1.0.8} [Dynamic Lights OtherPlayers Light Module] (DynamicLights-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
DynamicLights_thePlayer{1.1.4} [Dynamic Lights Player Light Module] (DynamicLights-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
mod_Invasion{1.1.2} [Invasion] (Invasion_1.1.2_1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
inventorytweaks{1.58-147-645ca10} [Inventory Tweaks] (InventoryTweaks-1.58-147.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
LavaMonsters{2.2.1} [Lava Monsters] (LavaMonsters-1.7.10-2.2.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
lycanitesmobs{1.10.12.1 - MC 1.7.10} [Lycanites Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
arcticmobs{1.10.12.1 - MC 1.7.10} [Lycanites Arctic Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
demonmobs{1.10.12.1 - MC 1.7.10} [Lycanites Demon Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
desertmobs{1.10.12.1 - MC 1.7.10} [Lycanites Desert Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
forestmobs{1.10.12.1 - MC 1.7.10} [Lycanites Forest Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
freshwatermobs{1.10.12.1 - MC 1.7.10} [Lycanites Freshwater Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
infernomobs{1.10.12.1 - MC 1.7.10} [Lycanites Inferno Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
junglemobs{1.10.12.1 - MC 1.7.10} [Lycanites Jungle Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
mountainmobs{1.10.12.1 - MC 1.7.10} [Lycanites Mountain Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
plainsmobs{1.10.12.1 - MC 1.7.10} [Lycanites Plains Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
saltwatermobs{1.10.12.1 - MC 1.7.10} [Lycanites Saltwater Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
shadowmobs{1.10.12.1 - MC 1.7.10} [Lycanites Shadow Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
swampmobs{1.10.12.1 - MC 1.7.10} [Lycanites Swamp Mobs] (LycanitesMobsComplete 1.10.12.1 [1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
movillages{1.2.1} [Mo' Villages] (MoVillages-1.3.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->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->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
reccomplex{0.9.3} [Recurrent Complex] (RecurrentComplex-0.9.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
Roguelike{1.3.5} [Roguelike Dungeons] (roguelike-1.7.10-1.3.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
universalcoins{1.7.10-1.5.8} [Universal Coins] (UniversalCoins-1.7.10-1.5.8.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
UtilityMobs{3.1.1} [Utility Mobs] (UtilityMobs-1.7.10-3.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 2 / 8; [EntityPlayerMP['SirGareth'/301717, l='MineCrash', x=-638.62, y=71.00, z=236.98], EntityPlayerMP['DarkMetaknight'/301036, l='MineCrash', x=-639.20, y=71.00, z=232.02]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

I recently added Lycanite's Mobs and Dynamic Lights. It should be noted I deleted Update Detector when installing Dynamic Lights, which I assume should not cause issues.
This crash happened while my friend was sorting chests, or chopping a tree so far, like I said, seemingly randomly.

Help would be greatly appreciated as I can't really read crash logs.

Check out my adventure modpack! 25+ carefully selected mods (Not counting Core Mods) and great for if you don't have that beefy of a computer. Plus it has over 2K downloads and counting so y'know it's good. Oh, and fully multiplayer compatible!

There's also the resource intensive version (if you can handle it) for a bigger experience!

#2 Mar 29, 2015

DarkMetaknight

Zombie Killer
Location: Battleship Halberd
Join Date: 6/27/2013
Posts: 772
Location: Dreamland
Minecraft: DarkMetaknight
Member Details

It just happened again...Could someone help? This is happening after an hour or two.

Edit: Ok....Apparently sometimes a few seconds into the world as well, I don't even know what's going on. This also happens in singleplayer as well.

Last edited by DarkMetaknight: Mar 29, 2015

Check out my adventure modpack! 25+ carefully selected mods (Not counting Core Mods) and great for if you don't have that beefy of a computer. Plus it has over 2K downloads and counting so y'know it's good. Oh, and fully multiplayer compatible!

There's also the resource intensive version (if you can handle it) for a bigger experience!