As the title implies. I am running a modded forge server with Minecraft version 1.6.4 and Forge version 9.11.1.946

 

So far from what I gather it's a problem when a member of my server loads a new chunk. I have been racking my brain for too long with this and it's time I seek a bit of help. I suspect it's clashing ID's between blocks or items being loaded on the new chunks. Here is the crash report as follows;

 

---- Minecraft Crash Report ----

// Who set us up the TNT?

 

Time: 21/11/13 12:39 AM

Description: Exception ticking world

 

java.lang.NullPointerException

at net.minecraft.world.gen.structure.StructureStart.func_75068_a(StructureStart.java:47)

at net.minecraft.world.gen.structure.MapGenStructure.func_75051_a(MapGenStructure.java:81)

at net.minecraft.world.gen.ChunkProviderGenerate.func_73153_a(ChunkProviderGenerate.java:533)

at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:258)

at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1243)

at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:153)

at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:166)

at net.minecraft.world.World.func_72964_e(World.java:529)

at net.minecraft.world.SpawnerAnimals.func_77189_a(SpawnerAnimals.java:36)

at net.minecraft.world.SpawnerAnimals.func_77192_a(SpawnerAnimals.java:108)

at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:177)

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:657)

at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:276)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)

at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)

 

 

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

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

 

-- Head --

Stacktrace:

at net.minecraft.world.gen.structure.StructureStart.func_75068_a(StructureStart.java:47)

at net.minecraft.world.gen.structure.MapGenStructure.func_75051_a(MapGenStructure.java:81)

at net.minecraft.world.gen.ChunkProviderGenerate.func_73153_a(ChunkProviderGenerate.java:533)

at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:258)

at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1243)

at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:153)

at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:166)

at net.minecraft.world.World.func_72964_e(World.java:529)

at net.minecraft.world.SpawnerAnimals.func_77189_a(SpawnerAnimals.java:36)

at net.minecraft.world.SpawnerAnimals.func_77192_a(SpawnerAnimals.java:108)

at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:177)

 

-- Affected level --

Details:

Level name: HarvestMine

All players: 2 total; [EntityPlayerMP['BlocktimusMine'/1112, l='HarvestMine', x=269.04, y=256.00, z=298.01], EntityPlayerMP['SkyWhisperer'/6380, l='HarvestMine', x=-283.28, y=63.00, z=432.04]]

Chunk stats: ServerChunkCache: 1001 Drop: 0

Level seed: 5766268225899886449

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

Level generator options:

Level spawn location: World: (274,252,298), Chunk: (at 2,15,10 in 17,18; contains blocks 272,0,288 to 287,255,303), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)

Level time: 3120454 game time, 1043925 day time

Level dimension: 0

Level storage version: 0x04ABD - Anvil

Level weather: Rain time: 18234522 (now: false), thunder time: 18234522 (now: false)

Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false

Stacktrace:

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:657)

at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:276)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)

at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)

 

-- System Details --

Details:

Minecraft Version: 1.6.4

Operating System: Windows 7 (amd64) version 6.1

Java Version: 1.7.0_21, Oracle Corporation

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

Memory: 2786132560 bytes (2657 MB) / 3087007744 bytes (2944 MB) up to 3087007744 bytes (2944 MB)

JVM Flags: 2 total; -Xmx3G -Xms3G

AABB Pool Size: 9705 (543480 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Suspicious classes: FML and Forge are installed

IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63

FML: MCP v8.11 FML v6.4.41.946 Minecraft Forge 9.11.1.946 12 mods loaded, 12 mods active

mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

FML{6.4.41.946} [Forge Mod Loader] (minecraft_server.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Forge{9.11.1.946} [Minecraft Forge] (minecraft_server.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Backpack{1.18.17} [backpack] (backpack-1.18.17-1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Breeds{1.6.4 v5} [ModBreeds] (BetterBreeds 1.6.4 v5.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

ExtrabiomesXL{3.14.2} [ExtrabiomesXL] (ExtrabiomesXL-universal-1.6.4-3.14.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

mod_HarvestMoney{2.2} [mod_HarvestMoney] (HarvestMoney2.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Natura{2.1.11} [Natura] (Natura-1.6.4-2.1.11.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

pamharvestcraft{1.0} [Pam's HarvestCraft Base] (Pam's HarvestCraft 1.6.4 v1.1.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

pamweeeflowers{1.1} [Pam's Weee! Flowers] (Pam's Weee Flowers 1.6.4 v1.04.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

HungerOverhaul{1.6.X-2j} [Hunger Overhaul] (hungeroverhaul-1.6.X-2j.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Natura|ForgeMuliPart{0.1} [Natura Compat: FMP] (Natura-1.6.4-2.1.11.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available

Profiler Position: N/A (disabled)

Vec3 Pool Size: 1868 (104608 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Player Count: 2 / 10; [EntityPlayerMP['BlocktimusMine'/1112, l='HarvestMine', x=269.04, y=256.00, z=298.01], EntityPlayerMP['SkyWhisperer'/6380, l='HarvestMine', x=-283.28, y=63.00, z=432.04]]

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

Type: Dedicated Server (map_server.txt)

The problem is due to a bug in one of the mods.

I'm not sure why you think item/block Ids are involved as the crash report is about structure generation and you yourself speaks of loading chunks

 

Now find the mods which are generating structures, one of them is causing it.

Try a server with only one of them installed and see if you can make it crash when generating structures.

If not add another and so on until you find the one causing it.

 

Then take the crash report and send it to the mod author.

He will have to fix his code!

This is NOT an issue with forge.

Late response but the day after I posted this, I found out it was ExtrabiomesXL. In the config.txt file "Generate Villages" was selected for all 27 new Biomes. I disabled it on all biomes EXCEPT vanilla and it hasn't crashed since. Just wanted to thank you for pointing out it has to do with structure.gen from one of the mods, it pointed me in the right direction.