[CustomNPCs] [1.7.10b] [Question] Server crashing on a specific world

gavino · March 4, 2016

In the previous week end I had the opportunity to promote MinecraftEdu to several teachers.

I wanted to let them view directly a great world, the Wonderful World of Humanities, but when I tried to teleport them in the Ancient Egypt the server crashed.

It's the first time it happens because I'm using it every week in a class where 14 pc can connect to the server without problems.

The following crash-report says there were 23 people connected but the second says it happened with only two players.

Is there a way to debug this issue? Do you think there's a specific entity that is causing that crash? Is that world corrupted ?

The server crashes only with the WWOH world. It happened on my iMac and even on a linux cloud server both having the exact copy of the same word.

First crash report:

---- Minecraft Crash Report ----

// On the bright side, I bought you a teddy bear!

Time: 26/02/16 10.56

Description: Exception in server tick loop

java.lang.IllegalArgumentException: Don't know how to add class noppes.npcs.entity.EntityCustomNpc!

at net.minecraft.entity.EntityTrackerEntry.func_151260_c(EntityTrackerEntry.java:608)

at net.minecraft.entity.EntityTrackerEntry.func_73117_b(EntityTrackerEntry.java:359)

at net.minecraft.entity.EntityTrackerEntry.func_73125_b(EntityTrackerEntry.java:460)

at net.minecraft.entity.EntityTrackerEntry.func_73122_a(EntityTrackerEntry.java:125)

at net.minecraft.entity.EntityTracker.func_72788_a(EntityTracker.java:281)

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:716)

at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:356)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:615)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:494)

at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:754)

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: Mac OS X (x86_64) version 10.11

Java Version: 1.8.0_45, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 1624814544 bytes (1549 MB) / 1806172160 bytes (1722 MB) up to 3817865216 bytes (3641 MB)

JVM Flags: 1 total; -Xmx4096M

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

FML: MCP v9.03 FML v7.10.85.0 Minecraft Forge 10.13.2.1291 10 mods loaded, 10 mods active

mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

FML{7.10.85.0} [Forge Mod Loader] (minecraftedu_server.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Forge{10.13.2.1291} [Minecraft Forge] (minecraftedu_server.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

mcedu{1.7.10} [MinecraftEdu] (minecraftedu_server.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

animalbikes{1.7.10} [Animal Bikes] (AnimalBikes.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Backpack{2.0.1} [backpack] (backpack.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

ComputerCraft{1.74} [ComputerCraft] (computercraftedu_1.74.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

ComputerCraftEdu{1.74} [ComputerCraftEdu] (computercraftedu_1.74.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

CTBMod{1.7.10-0.1.2.12_beta} [Creatubbles Mod] (CTBMod-1.7.10-0.1.2.12_beta.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

customnpcs{1.7.10d} [CustomNpcs] (CustomNPCs.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->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: 23 / 100; [EntityPlayerMP['13giulia'/337, l='../worlds/tmpworld', x=-277,97, y=66,00, z=1329,15], EntityPlayerMP['11Veronica'/338, l='../worlds/tmpworld', x=-272,56, y=65,00, z=1332,42], EntityPlayerMP['06gino'/342, l='../worlds/tmpworld', x=-277,10, y=66,00, z=1326,51], EntityPlayerMP['05Giri'/341, l='../worlds/tmpworld', x=-272,58, y=67,00, z=1327,06], EntityPlayerMP['04Giulio'/344, l='../worlds/tmpworld', x=-281,59, y=63,00, z=1342,76], EntityPlayerMP['03MICHELANGELO'/343, l='../worlds/tmpworld', x=-269,30, y=66,00, z=1322,30], EntityPlayerMP['08nancy'/345, l='../worlds/tmpworld', x=-278,75, y=66,00, z=1330,68], EntityPlayerMP['23annalisa'/346, l='../worlds/tmpworld', x=-277,97, y=66,00, z=1329,15], EntityPlayerMP['14aurora'/347, l='../worlds/tmpworld', x=-277,97, y=66,00, z=1329,15], EntityPlayerMP['22rachele'/348, l='../worlds/tmpworld', x=-277,29, y=66,00, z=1330,46], EntityPlayerMP['9cristina'/350, l='../worlds/tmpworld', x=-277,97, y=66,00, z=1329,15], EntityPlayerMP['15Ilaria'/351, l='../worlds/tmpworld', x=-280,81, y=66,00, z=1330,15], EntityPlayerMP['16sukaina'/353, l='../worlds/tmpworld', x=-278,69, y=65,00, z=1332,19], EntityPlayerMP['10Miriam'/352, l='../worlds/tmpworld', x=-278,71, y=64,17, z=1340,97], EntityPlayerMP['24giulia'/354, l='../worlds/tmpworld', x=-277,97, y=66,00, z=1329,15], EntityPlayerMP['21martina'/356, l='../worlds/tmpworld', x=-277,54, y=66,00, z=1329,56], EntityPlayerMP['07silvia'/358, l='../worlds/tmpworld', x=-279,09, y=62,00, z=1339,28], EntityPlayerMP['marcov'/381, l='../worlds/tmpworld', x=-286,78, y=66,00, z=1314,87], EntityPlayerMP['32STEFANO'/380, l='../worlds/tmpworld', x=-273,24, y=63,00, z=1340,74], EntityPlayerMP['19letizia'/379, l='../worlds/tmpworld', x=-274,66, y=66,00, z=1324,98], EntityPlayerMP['12Marina'/501, l='../worlds/tmpworld', x=-81,50, y=108,00, z=1357,50], EntityPlayerMP['30virginia'/500, l='../worlds/tmpworld', x=-81,50, y=108,00, z=1357,50], EntityPlayerMP['31sara'/502, l='../worlds/tmpworld', x=-81,50, y=108,00, z=1357,50]]

Is Modded: Definitely; Server brand changed to 'fml,forge'

Type: Dedicated Server (map_server.txt)

Second crash report:

---- Minecraft Crash Report ----

// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 26/02/16 10.54

Description: Ticking entity

java.lang.IllegalArgumentException: Don't know how to add class noppes.npcs.entity.EntityCustomNpc!

at net.minecraft.entity.EntityTrackerEntry.func_151260_c(EntityTrackerEntry.java:608)

at net.minecraft.entity.EntityTrackerEntry.func_73117_b(EntityTrackerEntry.java:359)

at net.minecraft.entity.EntityTracker.func_85172_a(EntityTracker.java:347)

at net.minecraft.entity.player.EntityPlayerMP.func_70071_h_(EntityPlayerMP.java:411)

at net.minecraft.world.World.func_72866_a(World.java:2089)

at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:655)

at net.minecraft.world.World.func_72870_g(World.java:2053)

at net.minecraft.world.World.func_72939_s(World.java:1906)

at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:496)

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:704)

at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:356)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:615)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:494)

at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:754)

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

---------------------------------------------------------------------------------------

-- Head --

Stacktrace:

at net.minecraft.entity.EntityTrackerEntry.func_151260_c(EntityTrackerEntry.java:608)

at net.minecraft.entity.EntityTrackerEntry.func_73117_b(EntityTrackerEntry.java:359)

at net.minecraft.entity.EntityTracker.func_85172_a(EntityTracker.java:347)

at net.minecraft.entity.player.EntityPlayerMP.func_70071_h_(EntityPlayerMP.java:411)

at net.minecraft.world.World.func_72866_a(World.java:2089)

at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:655)

at net.minecraft.world.World.func_72870_g(World.java:2053)

-- Entity being ticked --

Details:

Entity Type: null (net.minecraft.entity.player.EntityPlayerMP)

Entity ID: 477

Entity Name: 13giulia

Entity's Exact location: -81,50, 108,00, 1357,50

Entity's Block location: World: (-82,108,1357), Chunk: (at 14,6,13 in -6,84; contains blocks -96,0,1344 to -81,255,1359), Region: (-1,2; contains chunks -32,64 to -1,95, blocks -512,0,1024 to -1,255,1535)

Entity's Momentum: 0,00, 0,00, 0,00

Stacktrace:

at net.minecraft.world.World.func_72939_s(World.java:1906)

at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:496)

-- Affected level --

Details:

Level name: ../worlds/tmpworld

All players: 2 total; [EntityPlayerMP['05Giri'/345, l='../worlds/tmpworld', x=-81,50, y=108,00, z=1357,50], EntityPlayerMP['13giulia'/477, l='../worlds/tmpworld', x=-81,50, y=108,00, z=1357,50]]

Chunk stats: ServerChunkCache: 608 Drop: 0

Level seed: 1250288952

Level generator: ID 00 - default, ver 1. Features enabled: true

Level generator options:

Level spawn location: World: (-82,108,1357), Chunk: (at 14,6,13 in -6,84; contains blocks -96,0,1344 to -81,255,1359), Region: (-1,2; contains chunks -32,64 to -1,95, blocks -512,0,1024 to -1,255,1535)

Level time: 69692267 game time, 38767600 day time

Level dimension: 0

Level storage version: 0x04ABD - Anvil

Level weather: Rain time: 86374 (now: false), thunder time: 36354 (now: false)

Level game mode: Game mode: minecraftedu (ID 3). Hardcore: false. Cheats: false

Stacktrace:

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:704)

at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:356)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:615)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:494)

at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:754)

-- System Details --

Details:

Minecraft Version: 1.7.10

Operating System: Mac OS X (x86_64) version 10.11

Java Version: 1.8.0_45, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 903080472 bytes (861 MB) / 1089470464 bytes (1039 MB) up to 3817865216 bytes (3641 MB)