server crash and login issues

so every once and a while someone will dissconnect and this error will pop up

Code:

21:10:07 [INFO] ironferret2313 [/127.0.0.1:53276] logged in with entity id 11661
9
21:12:26 [SEVERE] java.net.SocketException: Connection reset
21:12:26 [SEVERE]       at java.net.SocketInputStream.read(Unknown Source)
21:12:26 [SEVERE]       at java.net.SocketInputStream.read(Unknown Source)
21:12:26 [SEVERE]       at java.io.FilterInputStream.read(Unknown Source)
21:12:26 [SEVERE]       at net.minecraft.server.Packet.b(SourceFile:113)
21:12:26 [SEVERE]       at net.minecraft.server.NetworkManager.f(SourceFile:155)

21:12:26 [SEVERE]       at net.minecraft.server.NetworkManager.c(SourceFile:9)
21:12:26 [SEVERE]       at net.minecraft.server.NetworkReaderThread.run(SourceFi
le:62)
21:12:26 [INFO] ironferret2313 lost connection: disconnect.genericReason

most of the time this happens when people willingly log out, othere times it force logs them out

then after the server has been running for a few hours to a few days it spams that message 20 times, dicconects everyone, then refuses to do anything, even accept commands.

D: help?

edit:

Windows 7 - 64 bit
craftbukkit 556
Plugins:
Multiworld
multi-inv
groupmanager
essentials
worldedit
worldguard
nocheatplugin
LWC
Prefixer
Citizens
spawnmob
magicarpet
cleaner
fakepermissions

 

having the exact same issue with CB 531

00:28:32 [SEVERE] java.net.SocketException: Connection reset
00:28:32 [SEVERE] at java.net.SocketInputStream.read(SocketInputStream.java:189)
00:28:32 [SEVERE] at java.net.SocketInputStream.read(SocketInputStream.java:121)
00:28:32 [SEVERE] at java.net.SocketInputStream.read(SocketInputStream.java:203)
00:28:32 [SEVERE] at java.io.FilterInputStream.read(FilterInputStream.java:83)
00:28:32 [SEVERE] at net.minecraft.server.Packet.b(SourceFile:113)
00:28:32 [SEVERE] at net.minecraft.server.NetworkManager.f(SourceFile:155)
00:28:32 [SEVERE] at net.minecraft.server.NetworkManager.c(SourceFile:9)
00:28:32 [SEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:62)

 

i updated to the latest CB 556 and still getting the error

another error message.... this one happens frequently too

Code:

23:38:55 [SEVERE] Could not pass event PLAYER_MOVE to MultiVerse
java.lang.IllegalStateException: Failed to add player. net.minecraft.server.Enti
tyPlayer@10a0(mexicanjezus at -91.5,65.62000000476837,-12.5) already is in chunk
 -8, -3
        at net.minecraft.server.PlayerInstance.a(PlayerInstance.java:38)
        at net.minecraft.server.PlayerManager.a(PlayerManager.java:76)
        at org.bukkit.craftbukkit.entity.CraftPlayer.teleportTo(CraftPlayer.java
:166)
        at com.onarandombox.Rigby.MultiVerse.MVPlayerListener.onPlayerMove(MVPla
yerListener.java:327)
        at org.bukkit.plugin.java.JavaPluginLoader$7.execute(JavaPluginLoader.ja
va:192)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:59)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:255)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:124)
        at net.minecraft.server.Packet10Flying.a(SourceFile:126)
        at net.minecraft.server.NetworkManager.a(SourceFile:230)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:76)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:100)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:357)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:272)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)
23:38:56 [SEVERE] java.lang.NullPointerException
23:38:56 [SEVERE]       at uk.co.tggl.Pluckerpluck.MultiInv.MultiInv$1.run(Multi
Inv.java:85)
23:38:56 [SEVERE]       at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainT
hreadHeartbeat(CraftScheduler.java:122)
23:38:56 [SEVERE]       at net.minecraft.server.MinecraftServer.h(MinecraftServe
r.java:345)
23:38:56 [SEVERE]       at net.minecraft.server.MinecraftServer.run(MinecraftSer
ver.java:272)
23:38:56 [SEVERE]       at net.minecraft.server.ThreadServerApplication.run(Sour
ceFile:366)
23:38:56 [SEVERE] Unexpected exception
java.lang.NullPointerException
        at uk.co.tggl.Pluckerpluck.MultiInv.MultiInv$1.run(MultiInv.java:85)
        at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(C
raftScheduler.java:122)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:345)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:272)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)
>

these issues are getting worse, i re-downloaded all the plugins, culled out everything but the essentials plugins and downloaded the most current stable version of bukkit.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Since multiverse keeps giving you errors, go to multiverse thread and ask.