Constant bukkit crash, every few minutes.

---- Minecraft Crash Report ----
// Shall we play a game?
Time: 8/3/12 3:17 PM
Description: Exception in server tick loop
java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(Unknown Source)
at java.util.AbstractList$Itr.next(Unknown Source)
at net.minecraft.server.PlayerManager.flush(PlayerManager.java:36)
at net.minecraft.server.WorldServer.doTick(WorldServer.java:172)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:534)
at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:212)
at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:472)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:404)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
Relevant Details:
- Minecraft Version: 1.3.1
- Operating System: Windows Server 2008 R2 (amd64) version 6.1
- Java Version: 1.6.0_29, Sun Microsystems Inc.
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
- Memory: 602926120 bytes (574 MB) / 1030160384 bytes (982 MB) up to 5726666752 bytes (5461 MB)
- JVM Flags: 2 total; -Xms1024M -Xmx6144M
- Type: Dedicated Server
- Is Modded: Definitely; 'craftbukkit'
- Profiler Position: N/A (disabled)
- Player Count: 6 / 50; [EntityPlayer['Zederator'/97, l='Heaven', x=3014.69, y=86.12, z=3588.14](Zederator at 3014.689537204263,86.12172996251373,3588.1356422645244), EntityPlayer['ya23245'/2171, l='Heaven', x=-5018.52, y=67.00, z=235.94](ya23245 at -5018.517245815741,67.0,235.94248062580343), EntityPlayer['stefandeminer'/8975, l='Heaven', x=-679.07, y=95.59, z=76.67](stefandeminer at -679.0692339159224,95.5901301746778,76.6736501621834), EntityPlayer['gabbimagoo'/17324, l='Heaven', x=-834.57, y=64.00, z=-55.95](gabbimagoo at -834.5725514205001,64.0,-55.947623374685314), EntityPlayer['nejjo'/49552, l='Heaven', x=-478.48, y=64.00, z=97.06](nejjo at -478.48496751644876,64.0,97.05597794886897), EntityPlayer['_Tallulah_'/60741, l='Heaven', x=-645.70, y=63.00, z=551.98](_Tallulah_ at -645.6999999880791,63.0,551.9815589154863)]
- World Heaven Entities: 0 total; []
- World Heaven Players: 0 total; []
- World Heaven Chunk Stats: ServerChunkCache: 625 Drop: 0



Anyone understands this, including how to fix it? tried devbiuld 1 / 12 / 13 but they all give this crashing error....


Sorry for the short topic but i dont understand shit of this and wish some help


with or without plugins.. same effect

 

I get this error two it is because of the update, uninstall your plugins until the error goes away, the last one you unistalled nautrally is the one causing it.