Server crash help?

[IONCinematics]

Okay, so on my attack of the b-team server, me and my friend play and it used to all work perfectly. But recently when we are both on the server it crashes. It seems that having one person on the server is fine, but when a second person joins the server crashes. The crash report is below, if anyone could help that would be extremely helpful.

 

Thanks.

 

 

---- Minecraft Crash Report ----

// This doesn't make any sense!

 

Time: 3/31/14 6:37 PM

Description: Exception in server tick loop

 

java.lang.ArrayIndexOutOfBoundsException: -1

 at java.util.ArrayList.elementData(Unknown Source)

 at java.util.ArrayList.get(Unknown Source)

 at net.minecraft.server.management.ServerConfigurationManager.func_72374_b(ServerConfigurationManager.java:1109)

 at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:917)

 at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:327)

 at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:780)

 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:662)

 at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)

 

 

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

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

 

-- System Details --

Details:

 Minecraft Version: 1.6.4

 Operating System: Linux (amd64) version 2.6.32-431.3.1.el6.x86_64

 Java Version: 1.7.0_45, Oracle Corporation

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

 Memory: 871261976 bytes (830 MB) / 3040870400 bytes (2900 MB) up to 3040870400 bytes (2900 MB)

 JVM Flags: 5 total; -Xmx3000M -Xms3000M -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256M

 AABB Pool Size: 2224 (124544 bytes; 0 MB) allocated, 1980 (110880 bytes; 0 MB) used

 Suspicious classes: FML and Forge are installed

 IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 59

 CraftBukkit Information: 

   Running: MCPC+ version git-MCPC-Plus-jenkins-MCPC-Plus-156 (MC: 1.6.4) (Implementing API version 1.6.4-R2.1-SNAPSHOT) true

   Plugins: {}

   Warnings: DEFAULT

   Threads: { TIMED_WAITING Connection #14 read thread: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpReaderThread.run(TcpReaderThread.java:27)], TIMED_WAITING Spigot Watchdog Thread: [java.lang.Thread.sleep(Native Method), org.spigotmc.WatchdogThread.run(WatchdogThread.java:85)], RUNNABLE Listen thread: [java.net.PlainSocketImpl.socketAccept(Native Method), java.net.AbstractPlainSocketImpl.accept(Unknown Source), java.net.ServerSocket.implAccept(Unknown Source), java.net.ServerSocket.accept(Unknown Source), net.minecraft.server.ServerListenThread.run(ServerListenThread.java:82)], TIMED_WAITING Thread-38: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpMasterThread.run(TcpMasterThread.java:17)], TIMED_WAITING Connection #13 write thread: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpWriterThread.run(TcpWriterThread.java:49)], WAITING Keep-Alive-SocketCleaner: [java.lang.Object.wait(Native Method), sun.net.www.http.KeepAliveStreamCleaner.run(Unknown Source), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Connection #15 write thread: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpWriterThread.run(TcpWriterThread.java:49)], TIMED_WAITING Thread-5: [java.lang.Thread.sleep(Native Method), net.minecraft.server.dedicated.DedicatedServerSleepThread.run(DedicatedServerSleepThread.java:23)], TIMED_WAITING Spigot Metrics Thread: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], TIMED_WAITING Keep-Alive-Timer: [java.lang.Thread.sleep(Native Method), sun.net.www.http.KeepAliveCache.run(Unknown Source), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Immibis Core background task: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], TIMED_WAITING Snooper Timer: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], RUNNABLE DestroyJavaVM: [], RUNNABLE Connection #15 read thread: [java.net.SocketInputStream.socketRead0(Native Method), java.net.SocketInputStream.read(Unknown Source), java.net.SocketInputStream.read(Unknown Source), java.io.FilterInputStream.read(Unknown Source), org.bouncycastle.crypto.io.CipherInputStream.nextChunk(Unknown Source), org.bouncycastle.crypto.io.CipherInputStream.read(Unknown Source), java.io.DataInputStream.readUnsignedByte(Unknown Source), net.minecraft.network.packet.Packet.func_73272_a(Packet.java:159), net.minecraft.network.TcpConnection.func_74447_i(TcpConnection.java:327), net.minecraft.network.TcpConnection.func_74450_c(TcpConnection.java:556), net.minecraft.network.TcpReaderThread.run(TcpReaderThread.java:23)], TIMED_WAITING File IO Thread: [java.lang.Thread.sleep(Native Method), net.minecraft.world.storage.ThreadedFileIOBase.func_75736_b(ThreadedFileIOBase.java:61), net.minecraft.world.storage.ThreadedFileIOBase.run(ThreadedFileIOBase.java:27), java.lang.Thread.run(Unknown Source)], WAITING Reference Handler: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:503), java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)], RUNNABLE Command Reader: [java.io.FileInputStream.readBytes(Native Method), java.io.FileInputStream.read(Unknown Source), java.io.BufferedInputStream.fill(Unknown Source), java.io.BufferedInputStream.read(Unknown Source), java.io.FilterInputStream.read(Unknown Source), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader$1.read(ConsoleReader.java:167), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:267), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:204), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:995), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLineSimple(ConsoleReader.java:1506), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:1153), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:1117), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:1105), net.minecraft.server.dedicated.DedicatedServerCommandThread.run(DedicatedServerCommandThread.java:42)], WAITING Finalizer: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(Unknown Source), java.lang.ref.ReferenceQueue.remove(Unknown Source), java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)], WAITING Thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source), java.util.concurrent.LinkedBlockingQueue.take(Unknown Source), cpw.mods.fml.relauncher.FMLRelaunchLog$ConsoleLogThread.run(FMLRelaunchLog.java:83), java.lang.Thread.run(Unknown Source)], RUNNABLE Signal Dispatcher: [], RUNNABLE Server thread: [java.lang.Thread.dumpThreads(Native Method), java.lang.Thread.getAllStackTraces(Unknown Source), org.bukkit.craftbukkit.v1_6_R3.CraftCrashReport.call(CraftCrashReport.java:27), net.minecraft.crash.CrashReportCategory.func_71500_a(CrashReportCategory.java:106), net.minecraft.crash.CrashReport.func_71504_g(CrashReport.java:58), net.minecraft.crash.CrashReport.<init>(CrashReport.java:40), net.minecraft.server.MinecraftServer.run(MinecraftServer.java:692), net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)], WAITING Chunk I/O Executor Thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source), java.util.concurrent.LinkedBlockingQueue.take(Unknown Source), java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], RUNNABLE Connection #13 read..

[Kalbintion]

Post issues on the tracker after reading guidelines. Links are in my signature below. Also, this news article by Technic seems to be related.