So every time I go through a different portal on my server my game crashes. However, when I go through the same portal multiple times the game doesn't crash. My build is mcpc-plus-1.6.2-R0.1-forge789-B18 . This also happens to other people on the server. Here's the crash report:

 

Time: 7/22/13 8:20 AM

Description: Exception in world tick

 

java.lang.IllegalArgumentException: Could not get provider type for dimension 5, does not exist

at net.minecraftforge.common.DimensionManager.getProviderType(DimensionManager.java:157)

at net.minecraftforge.common.DimensionManager.createProviderFor(DimensionManager.java:304)

at net.minecraft.world.WorldProvider.func_76570_a(WorldProvider.java:209)

at net.minecraft.client.multiplayer.WorldClient.<init>(WorldClient.java:62)

at net.minecraft.client.multiplayer.NetClientHandler.func_72483_a(NetClientHandler.java:1093)

at net.minecraft.network.packet.Packet9Respawn.func_73279_a(SourceFile:28)

at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:458)

at net.minecraft.client.multiplayer.NetClientHandler.func_72551_d(NetClientHandler.java:281)

at net.minecraft.client.multiplayer.WorldClient.func_72835_b(WorldClient.java:99)

at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1916)

at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:898)

at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:826)

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:57)

at net.minecraft.launchwrapper.Launch.main(Launch.java:18)

 

 

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

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

 

-- Head --

Stacktrace:

at net.minecraftforge.common.DimensionManager.getProviderType(DimensionManager.java:157)

at net.minecraftforge.common.DimensionManager.createProviderFor(DimensionManager.java:304)

at net.minecraft.world.WorldProvider.func_76570_a(WorldProvider.java:209)

at net.minecraft.client.multiplayer.WorldClient.<init>(WorldClient.java:62)

at net.minecraft.client.multiplayer.NetClientHandler.func_72483_a(NetClientHandler.java:1093)

at net.minecraft.network.packet.Packet9Respawn.func_73279_a(SourceFile:28)

at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:458)

at net.minecraft.client.multiplayer.NetClientHandler.func_72551_d(NetClientHandler.java:281)

 

-- Affected level --

Details:

Level name: MpServer

All players: 1 total; [EntityClientPlayerMP['1london'/183944, l='MpServer', x=368.13, y=73.62, z=-176.43]]

Chunk stats: MultiplayerChunkCache: 0

Level seed: 0

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

Level generator options:

Level spawn location: World: (218,72,220), Chunk: (at 10,4,12 in 13,13; contains blocks 208,0,208 to 223,255,223), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)

Level time: 17865318 game time, 18440701 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: creative (ID 1). Hardcore: false. Cheats: false

Forced entities: 6 total; [EntityHorse['Horse'/192723, l='MpServer', x=395.41, y=70.00, z=-148.53], EntityBat['Bat'/192725, l='MpServer', x=386.75, y=60.10, z=-143.53], EntityClientPlayerMP['1london'/183944, l='MpServer', x=368.13, y=73.62, z=-176.43], EntityHorse['Horse'/192724, l='MpServer', x=382.13, y=71.00, z=-144.63], EntityHorse['Horse'/192727, l='MpServer', x=319.13, y=70.00, z=-122.62], EntityHorse['Horse'/192726, l='MpServer', x=422.66, y=69.00, z=-153.28]]

Retry entities: 0 total; []

Server brand: ~~NULL~~

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_71407_l(Minecraft.java:1929)

at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:898)

at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:826)

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:57)

at net.minecraft.launchwrapper.Launch.main(Launch.java:18)

 

-- Affected level --

Details:

Level name: MpServer

All players: 1 total; [EntityClientPlayerMP['1london'/183944, l='MpServer', x=368.13, y=73.62, z=-176.43]]

Chunk stats: MultiplayerChunkCache: 0

Level seed: 0

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

Level generator options:

Level spawn location: World: (218,72,220), Chunk: (at 10,4,12 in 13,13; contains blocks 208,0,208 to 223,255,223), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)

Level time: 17865318 game time, 18440701 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: creative (ID 1). Hardcore: false. Cheats: false

Forced entities: 6 total; [EntityHorse['Horse'/192723, l='MpServer', x=395.41, y=70.00, z=-148.53], EntityBat['Bat'/192725, l='MpServer', x=386.75, y=60.10, z=-143.53], EntityClientPlayerMP['1london'/183944, l='MpServer', x=368.13, y=73.62, z=-176.43], EntityHorse['Horse'/192724, l='MpServer', x=382.13, y=71.00, z=-144.63], EntityHorse['Horse'/192727, l='MpServer', x=319.13, y=70.00, z=-122.62], EntityHorse['Horse'/192726, l='MpServer', x=422.66, y=69.00, z=-153.28]]

Retry entities: 0 total; []

Server brand: ~~NULL~~

Server type: Non-integrated multiplayer server

 

-- System Details --

Details:

Minecraft Version: 1.6.2

Operating System: Windows 7 (amd64) version 6.1

Java Version: 1.7.0_25, Oracle Corporation

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

Memory: 138539680 bytes (132 MB) / 241500160 bytes (230 MB) up to 954466304 bytes (910 MB)

JVM Flags: 1 total; -Xmx1G

AABB Pool Size: 21215 (1188040 bytes; 1 MB) allocated, 110 (6160 bytes; 0 MB) used

Suspicious classes: FML and Forge are installed

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

FML: MCP v8.04 FML v6.2.19.789 Minecraft Forge 9.10.0.789 6 mods loaded, 6 mods active

mcp{8.04} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

FML{6.2.19.789} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

Forge{9.10.0.789} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

BiblioCraft{1.3.4} [biblioCraft] (BiblioCraft[v1.3.4].zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

lantern{1.2} [Lantern mod] (Lantern1.2[1.6.2].zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

mca{3.4.0} [Minecraft Comes Alive] (MCA v3.4.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available

Launched Version: 1.6.2-Forge9.10.0.789

LWJGL: 2.9.0

OpenGL: ATI Radeon HD 5800 Series GL version 4.2.12002 Compatibility Profile Context 9.12.0.0, ATI Technologies Inc.

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

Type: Client (map_client.txt)

Resource Pack: World War I [16x16] (2).zip

Current Language: English (US)

Profiler Position: N/A (disabled)

Vec3 Pool Size: 1777 (99512 bytes; 0 MB) allocated, 38 (2128 bytes; 0 MB) used

 

Seince you're using MCPC i'd advise talking to the MCPC team.

But it looks like whatever mod you're going through the portal of, is not correctly registering there dimension ID.