1 specific play cannot connect to the server

when a freind of mine tries to connect a server thats the error i get on console:
06:53 AM [WARNING] Failed to handle packet for Andrew23374 [/76.110.90.116:50568]: java.lang.ArrayIndexOutOfBoundsException
it only happens to him, everyone else on the server is connecting with no problem, please help, thank you.

Anyone? this is very urgent

Alot of people started getting this error now please help D:

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

 

more specific error
(read upside down)

Code:

29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:409)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.MinecraftServer.q(MinecraftServer.java:476)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.DedicatedServer.r(DedicatedServer.java:225)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.MinecraftServer.r(MinecraftServer.java:580)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.DedicatedServerConnection.b(SourceFile:29)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.DedicatedServerConnectionThread.a(DedicatedServerConnectionThread.java:41)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.PendingConnection.c(PendingConnection.java:44)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.PendingConnection.d(PendingConnection.java:129)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.PlayerList.a(PlayerList.java:100)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.PlayerList.c(PlayerList.java:219)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.PlayerList.a(PlayerList.java:169)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.PlayerChunkMap.addPlayer(PlayerChunkMap.java:112)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.PlayerChunkMap.a(PlayerChunkMap.java:69)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.PlayerChunk.<init>(PlayerChunk.java:24)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:98)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.ChunkRegionLoader.chunkExists(ChunkRegionLoader.java:39)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.RegionFileCache.a(SourceFile:61)
29.04 03:35:52 [Server] INFO at net.minecraft.server.v1_5_R2.RegionFile.<init>(RegionFile.java:76)
29.04 03:35:52 [Server] INFO at java.util.ArrayList.set(ArrayList.java:399)
29.04 03:35:52 [Server] INFO at java.util.ArrayList.elementData(ArrayList.java:371)
29.04 03:35:52 [Server] INFO java.lang.ArrayIndexOutOfBoundsException: -5487101
29.04 03:35:52 [Server] WARNING Failed to handle packet for Mister_Fix [/84.228.96.20:52492]: java.lang.ArrayIndexOutOfBoundsException: -5487101
29.04 03:35:52 [Server] INFO Disconnecting Mister_Fix [/84.228.96.20:52492]: Internal server error

 

Try it with a different world. See if that works.

Probably an issue with a single region file. Try to find out where the players were when they last left the server. And delete the region file at that location (They are probably all in the same general area)

 

Try deleting the player file. This will cause him to lose his inventory, login position, and bed spawn, but might fix the issue.

 

that will fix the issue but will not prevent it from happening again.

i got the coords but how do i know wich chunk file is my coords?

 

Does he have any mods installed?

 

nope