Minecraft server unstable

[RedmenNL]

My direwolf20 server worked very well for about a week, but now it's starting to get really unstable.

This is the crash report that the server makes:

Spoiler

---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 1/2/13 10:31 AM
Description: Exception ticking world entities

java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
at java.util.ArrayList.rangeCheck(Unknown Source)
at java.util.ArrayList.remove(Unknown Source)
at yc.h(World.java:2136)
at in.h(WorldServer.java:516)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:679)
at ho.r(DedicatedServer.java:270)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
at fy.run(SourceFile:849)


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

-- Head --
Stacktrace:
at java.util.ArrayList.rangeCheck(Unknown Source)
at java.util.ArrayList.remove(Unknown Source)
at yc.h(World.java:2136)
at in.h(WorldServer.java:516)

-- Affected level --
Details:
Level name: world
All players: 0 total; []
Chunk stats: ServerChunkCache: 11 Drop: 10
Level seed: 1005788734519962673
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (0,0,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 0 game time, 0 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
Stacktrace:
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:679)
at ho.r(DedicatedServer.java:270)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
at fy.run(SourceFile:849)

-- System Details --
Details:
Minecraft Version: 1.4.6
Operating System: Windows Server 2008 R2 (amd64) version 6.1
Java Version: 1.7.0-ea, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
Memory: 476350552 bytes (454 MB) / 897712128 bytes (856 MB) up to 954466304 bytes (910 MB)
JVM Flags: 1 total; -Xmx1024M
AABB Pool Size: 1364 (76384 bytes; 0 MB) allocated, 1142 (63952 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 15, tcache: 0, allocated: 3, tallocated: 63
FML: MCP v7.25 FML v4.6.17.515 Minecraft Forge 6.5.0.489 53 mods loaded, 53 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available

**** SAME THING FOR ALL THE MODS under 1000 characters needed****

Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 1 / 20; [iq['redmen800'/198, l='world', x=-20.67, y=63.00, z=5.09]]
Is Modded: Definitely; Server brand changed to 'fml'
Type: Dedicated Server (map_server.txt)

And this is the crash report in the console:

Spoiler

11:31:59
CONSOLE:
[INFO] t: Exception ticking world entities
11:31:59
CONSOLE:
[INFO] at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:685)
11:31:59
CONSOLE:
[INFO] at ho.r(DedicatedServer.java:270)
11:31:59
CONSOLE:
[INFO] at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)
11:31:59
CONSOLE:
[INFO] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
11:31:59
CONSOLE:
[INFO] at fy.run(SourceFile:849)
11:31:59
CONSOLE:
[INFO] Caused by: java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
11:31:59
CONSOLE:
[INFO] at java.util.ArrayList.rangeCheck(Unknown Source)
11:31:59
CONSOLE:
[INFO] at java.util.ArrayList.remove(Unknown Source)
11:31:59
CONSOLE:
[INFO] at yc.h(World.java:2136)
11:31:59
CONSOLE:
[INFO] at in.h(WorldServer.java:516)
11:31:59
CONSOLE:
[INFO] at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:679)
11:31:59
CONSOLE:
[INFO] ... 4 more

The server is running McMyAdmin and has one gig of ram.
When the server crashes it will not stop automatically, it keeps running and will not accept players. RAM usage was 50% when it last crashed and I was the only one online. It doesn't happen when I do a specific thing it just happens every +- 30 minutes.
Thanks!

 

[Slapyurmomma]

Im not 100% sure but that looks like the crash i used to get, its caused by items going into a mystcraft portal and crashing the server. players that are on when this happens can still chat but cant open or do anything. There is an Unofficial fix going around and it fixed my server. (well atleast has not crashes due to that bug)
Hope that helps.

 

[RedmenNL]

Thanks! I'm installing the file right now! Link to the tread for other people having this issue: http://forum.feed-the-beast.com/thr...goes-through-mystcraft-portal-dw20-pack.5567/
It happens when a minecart goes though a portal.

 

[b0bst3r]

There's a hotfix for it made by a user posted on MC forums, unfortunately XCompWiz the Mystcraft author seems happy for people to download that hotfix and patch at a later date. Unfortunately FTB wont use a non-modders hotfix.