친구들과 마크 멀티를 하려 하는데 이런 크래시가 뜨면서 튕기네요.. 해결책좀 알려주세요

아 그리고 1.5.2 버킷은 https://www.fmforum.net/server_general/22495 이 링크에서 받았어요!

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 16. 6. 25 오후 3:33
Description: Exception in server tick loop

java.lang.ArrayIndexOutOfBoundsException: -1
 at java.util.concurrent.CopyOnWriteArrayList.get(Unknown Source)
 at java.util.concurrent.CopyOnWriteArrayList.get(Unknown Source)
 at net.minecraft.server.v1_5_R3.PlayerList.tick(PlayerList.java:724)
 at net.minecraft.server.v1_5_R3.MinecraftServer.r(MinecraftServer.java:587)
 at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:233)
 at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:472)
 at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:404)
 at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)

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

-- System Details --
Details:
 Minecraft Version: 1.5.2
 Operating System: Windows 7 (x86) version 6.1
 Java Version: 1.8.0_91, Oracle Corporation
 Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
 Memory: 874969744 bytes (834 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
 JVM Flags: 2 total; -Xms1G -Xmx1G
 AABB Pool Size: 456 (25536 bytes; 0 MB) allocated, 28 (1568 bytes; 0 MB) used
 Suspicious classes: $Proxy1, ObjectMatcher, $Proxy3, ...[com.avaje.ebean.config.dbplatform.DatabasePlatform, SQLitePlatform], [com.google.common.base.Function, Supplier, Suppliers, ...], [com.google.common.cache.CacheLoader, CacheBuilder, Cache, ...], [com.google.common.collect.ImmutableCollection, ImmutableList, Maps, ...], [com.google.common.io.Files, OutputSupplier, InputSupplier], [com.google.common.util.concurrent.UncheckedExecutionException, ThreadFactoryBuilder], [gnu.trove.TByteCollection, TShortCollection, TLongCollection, ...], [gnu.trove.impl.HashFunctions, PrimeFinder, Constants], [gnu.trove.impl.hash.THash, TPrimitiveHash, TByteHash, ...], [gnu.trove.iterator.TIterator, TByteIterator, TAdvancingIterator, ...], [gnu.trove.map.TLongShortMap, TObjectIntMap], [gnu.trove.map.hash.TLongShortHashMap, TObjectIntHashMap, TLongShortHashIterator], [gnu.trove.procedure.TLongShortProcedure, TObjectIntProcedure], [gnu.trove.set.TByteSet, TLongSet], [gnu.trove.set.hash.TByteHashSet], [io.netty.bootstrap.AbstractBootstrap, ServerBootstrap, ChannelFactory, ...], [io.netty.buffer.ByteBufAllocator, AbstractByteBufAllocator, PooledByteBufAllocator, ...], [io.netty.channel.EventLoopGroup, ChannelHandler, MultithreadEventLoopGroup, ...], [io.netty.channel.nio.NioEventLoopGroup, NioEventLoop, SelectedSelectionKeySet, ...], [io.netty.channel.socket.ServerSocketChannel, ServerSocketChannelConfig, DefaultServerSocketChannelConfig, ...], [io.netty.channel.socket.nio.NioServerSocketChannel, NioSocketChannel], [io.netty.handler.codec.ByteToMessageDecoder, ReplayingDecoder, CodecException, ...], [io.netty.handler.timeout.ReadTimeoutHandler, TimeoutException, ReadTimeoutException, ...], [io.netty.util.Signal, UniqueName, AttributeMap, ...], [io.netty.util.concurrent.EventExecutorGroup, AbstractEventExecutorGroup, MultithreadEventExecutorGroup, ...], [io.netty.util.internal.SystemPropertyUtil, PlatformDependent, PlatformDependent0, ...], [io.netty.util.internal.logging.InternalLoggerFactory, Slf4JLoggerFactory, Log4JLoggerFactory, ...], [javassist.ClassPath, ClassPool, NotFoundException, ...], [javassist.bytecode.AttributeInfo, SignatureAttribute, BadBytecode, ...], [javassist.bytecode.stackmap.TypeTag, Tracer, MapMaker, ...], [javassist.compiler.CompileError, Javac, TokenId, ...], [javassist.compiler.ast.Visitor, ASTree, ASTList, ...], [net.minecraft.server.v1_5_R3.ICommandListener, IMojangStatistics, IProgressUpdate, ...], [org.apache.commons.lang.Validate, StringUtils, ObjectUtils, ...], [org.apache.commons.lang.exception.Nestable], [org.bukkit.World, BlockChangeDelegate, Server, ...], [org.bukkit.block.BlockState, BlockFace, Block, ...], [org.bukkit.command.CommandSender, RemoteConsoleCommandSender, CommandException, ...], [org.bukkit.command.defaults.VanillaCommand, SaveCommand, SaveOnCommand, ...], [org.bukkit.configuration.ConfigurationSection, Configuration, MemorySection, ...], [org.bukkit.configuration.file.FileConfiguration, YamlConfiguration, FileConfigurationOptions, ...], [org.bukkit.configuration.serialization.ConfigurationSerializable, ConfigurationSerialization, DelegateDeserialization, ...], [org.bukkit.conversations.Conversable, ConversationCanceller], [org.bukkit.craftbukkit.Main], [org.bukkit.craftbukkit.libs.com.google.gson.JsonDeserializer, JsonParseException], [org.bukkit.craftbukkit.libs.jline.TerminalFactory, Terminal, Flavor, ...], [org.bukkit.craftbukkit.libs.jline.console.ConsoleReader, CursorBuffer, ConsoleKeys, ...], [org.bukkit.craftbukkit.libs.jline.console.completer.CompletionHandler, CandidateListCompletionHandler], [org.bukkit.craftbukkit.libs.jline.console.history.History, MemoryHistory], [org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader, Configuration, Log], [org.bukkit.craftbukkit.libs.joptsimple.OptionException, OptionParser, OptionSpec, ...], [org.bukkit.craftbukkit.libs.joptsimple.internal.AbbreviationMap, ReflectionException, Reflection, ...], [org.bukkit.craftbukkit.v1_5_R3.LoggerOutputStream, CraftServer, CraftOfflinePlayer, ...], [org.bukkit.craftbukkit.v1_5_R3.block.CraftBlock], [org.bukkit.craftbukkit.v1_5_R3.chunkio.ChunkIOExecutor, ChunkIOProvider, QueuedChunk], [org.bukkit.craftbukkit.v1_5_R3.command.ServerCommandSender, CraftConsoleCommandSender, ColouredConsoleSender, ...], [org.bukkit.craftbukkit.v1_5_R3.conversations.ConversationTracker], [org.bukkit.craftbukkit.v1_5_R3.enchantments.CraftEnchantment], [org.bukkit.craftbukkit.v1_5_R3.entity.CraftEntity, CraftLivingEntity, CraftHumanEntity, ...], [org.bukkit.craftbukkit.v1_5_R3.event.CraftEventFactory], [org.bukkit.craftbukkit.v1_5_R3.generator.InternalChunkGenerator, CustomChunkGenerator, NormalChunkGenerator, ...], [org.bukkit.craftbukkit.v1_5_R3.help.SimpleHelpMap, CommandAliasHelpTopic, HelpYamlReader, ...], [org.bukkit.craftbukkit.v1_5_R3.inventory.CraftItemStack, CraftInventory, CraftInventoryDoubleChest, ...], [org.bukkit.craftbukkit.v1_5_R3.metadata.EntityMetadataStore, PlayerMetadataStore, WorldMetadataStore, ...], [org.bukkit.craftbukkit.v1_5_R3.potion.CraftPotionEffectType, CraftPotionBrewer], [org.bukkit.craftbukkit.v1_5_R3.scheduler.CraftScheduler, CraftTask, CraftFuture, ...], [org.bukkit.craftbukkit.v1_5_R3.scoreboard.CraftScoreboardManager, CraftScoreboard], [org.bukkit.craftbukkit.v1_5_R3.updater.AutoUpdater, BukkitDLUpdaterService, DateDeserializer], [org.bukkit.craftbukkit.v1_5_R3.util.Waitable, ServerShutdownThread, TerminalConsoleHandler, ...], [org.bukkit.enchantments.Enchantment, EnchantmentWrapper], [org.bukkit.entity.Entity, Damageable, LivingEntity, ...], [org.bukkit.entity.minecart.PoweredMinecart, StorageMinecart, ExplosiveMinecart, ...], [org.bukkit.event.Event, Cancellable, Listener, ...], [org.bukkit.event.block.BlockEvent, BlockFadeEvent, BlockGrowEvent, ...], [org.bukkit.event.entity.EntityEvent, EntityInteractEvent, EntityDamageEvent, ...], [org.bukkit.event.hanging.HangingEvent, HangingPlaceEvent], [org.bukkit.event.inventory.InventoryMoveItemEvent, InventoryEvent, InventoryInteractEvent, ...], [org.bukkit.event.painting.PaintingEvent, PaintingPlaceEvent, PaintingBreakEvent, ...], [org.bukkit.event.player.PlayerEvent, PlayerInteractEvent, PlayerFishEvent, ...], [org.bukkit.event.server.ServerEvent, MapInitializeEvent, ServerCommandEvent, ...], [org.bukkit.event.vehicle.VehicleEvent, VehicleCollisionEvent, VehicleBlockCollisionEvent, ...], [org.bukkit.event.weather.WeatherEvent, ThunderChangeEvent, WeatherChangeEvent, ...], [org.bukkit.event.world.WorldEvent, WorldSaveEvent, WorldInitEvent, ...], [org.bukkit.generator.ChunkGenerator], [org.bukkit.help.HelpMap, HelpTopic, IndexHelpTopic, ...], [org.bukkit.inventory.ItemStack, Inventory, DoubleChestInventory, ...], [org.bukkit.inventory.meta.ItemMeta, Repairable, BookMeta, ...], [org.bukkit.map.MapView], [org.bukkit.material.MaterialData, Tree, Directional, ...], [org.bukkit.metadata.Metadatable, MetadataStore, MetadataStoreBase], [org.bukkit.permissions.ServerOperator, Permissible, PermissionDefault, ...], [org.bukkit.plugin.ServicesManager, PluginManager, SimpleServicesManager, ...], [org.bukkit.plugin.java.JavaPluginLoader, PluginClassLoader, JavaPlugin], [org.bukkit.plugin.messaging.PluginMessageRecipient, Messenger, StandardMessenger, ...], [org.bukkit.potion.PotionEffectType, PotionEffectTypeWrapper, PotionBrewer, ...], [org.bukkit.scheduler.BukkitScheduler, BukkitTask], [org.bukkit.scoreboard.ScoreboardManager, DisplaySlot, Scoreboard, ...], [org.bukkit.util.Vector, BlockVector, Java15Compat, ...], [org.bukkit.util.permissions.DefaultPermissions, CommandPermissions, BroadcastPermissions], [org.fusesource.hawtjni.runtime.Library], [org.fusesource.jansi.AnsiOutputStream, WindowsAnsiOutputStream, AnsiConsole, ...], [org.fusesource.jansi.internal.Kernel32, CONSOLE_SCREEN_BUFFER_INFO, COORD, ...], [org.spigotmc.MultiplexingServerConnection, SpigotConfig, Listener, ...], [org.spigotmc.netty.NettyServerConnection, NettyNetworkManager, NettySocketAdaptor, ...], [org.yaml.snakeyaml.DumperOptions, ScalarStyle, FlowStyle, ...], [org.yaml.snakeyaml.composer.Composer, ComposerException], [org.yaml.snakeyaml.constructor.BaseConstructor, SafeConstructor, Constructor, ...], [org.yaml.snakeyaml.emitter.Emitable, Emitter, EmitterState, ...], [org.yaml.snakeyaml.error.YAMLException, MarkedYAMLException, Mark], [org.yaml.snakeyaml.events.Event, NodeEvent, ScalarEvent, ...], [org.yaml.snakeyaml.external.com.google.gdata.util.common.base.Escaper, UnicodeEscaper, PercentEscaper], [org.yaml.snakeyaml.introspector.PropertyUtils, BeanAccess], [org.yaml.snakeyaml.nodes.Node, CollectionNode, SequenceNode, ...], [org.yaml.snakeyaml.parser.Parser, ParserImpl, ParserException, ...], [org.yaml.snakeyaml.reader.UnicodeReader, StreamReader, ReaderException], [org.yaml.snakeyaml.representer.BaseRepresenter, SafeRepresenter, Representer, ...], [org.yaml.snakeyaml.resolver.Resolver, ResolverTuple], [org.yaml.snakeyaml.scanner.Scanner, ScannerImpl, ScannerException, ...], [org.yaml.snakeyaml.serializer.Serializer, SerializerException], [org.yaml.snakeyaml.tokens.Token, AliasToken, ScalarToken, ...], [org.yaml.snakeyaml.util.UriEncoder, ArrayStack]
 IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
 CraftBukkit Information:
   Running: CraftBukkit version git-Spigot-959 (MC: 1.5.2) (Implementing API version 1.5.2-R1.1-SNAPSHOT) false
   Plugins: { Theomachy_septagram v1.3.9 septagram.Theomachy.Theomachy [],}
   Warnings: DEFAULT
   Threads: { TIMED_WAITING Spigot Metrics Thread: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], RUNNABLE Command Reader: [org.fusesource.jansi.internal.Kernel32._getch(Native Method), org.fusesource.jansi.internal.WindowsSupport.readByte(WindowsSupport.java:46), org.bukkit.craftbukkit.libs.jline.WindowsTerminal.readByte(WindowsTerminal.java:184), org.bukkit.craftbukkit.libs.jline.WindowsTerminal.access$000(WindowsTerminal.java:53), org.bukkit.craftbukkit.libs.jline.WindowsTerminal$1.read(WindowsTerminal.java:151), java.io.FilterInputStream.read(Unknown Source), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader$1.read(ConsoleReader.java:167), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:267), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:204), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:995), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:1167), net.minecraft.server.v1_5_R3.ThreadCommandReader.run(ThreadCommandReader.java:32)], RUNNABLE Signal Dispatcher: [], TIMED_WAITING Async Packet Handler - 0: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source), java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(Unknown Source), java.util.concurrent.SynchronousQueue$TransferStack.transfer(Unknown Source), java.util.concurrent.SynchronousQueue.poll(Unknown Source), java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Snooper Timer: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], RUNNABLE Attach Listener: [], TIMED_WAITING Spigot Watchdog Thread: [java.lang.Thread.sleep(Native Method), org.spigotmc.WatchdogThread.run(WatchdogThread.java:103)], RUNNABLE Netty IO Thread - 2: [sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method), sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source), sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source), sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source), sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source), sun.nio.ch.SelectorImpl.select(Unknown Source), io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:627), io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:318), io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101), java.lang.Thread.run(Unknown Source)], WAITING Finalizer: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(Unknown Source), java.lang.ref.ReferenceQueue.remove(Unknown Source), java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)], WAITING 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 Netty IO Thread - 0: [sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method), sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source), sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source), sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source), sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source), sun.nio.ch.SelectorImpl.select(Unknown Source), io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:627), io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:318), io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101), java.lang.Thread.run(Unknown Source)], RUNNABLE Netty IO Thread - 1: [sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method), sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source), sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source), sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source), sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source), sun.nio.ch.SelectorImpl.select(Unknown Source), io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:627), io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:318), io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101), java.lang.Thread.run(Unknown Source)], WAITING Reference Handler: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Unknown Source), java.lang.ref.Reference.tryHandlePending(Unknown Source), java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)], TIMED_WAITING File IO Thread: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_5_R3.FileIOThread.b(SourceFile:43), net.minecraft.server.v1_5_R3.FileIOThread.run(SourceFile:22), java.lang.Thread.run(Unknown Source)], RUNNABLE DestroyJavaVM: [], RUNNABLE Server thread: [java.lang.Thread.dumpThreads(Native Method), java.lang.Thread.getAllStackTraces(Unknown Source), org.bukkit.craftbukkit.v1_5_R3.CraftCrashReport.call(CraftCrashReport.java:28), net.minecraft.server.v1_5_R3.CrashReportSystemDetails.a(SourceFile:74), net.minecraft.server.v1_5_R3.CrashReport.h(CrashReport.java:41), net.minecraft.server.v1_5_R3.CrashReport.<init>(CrashReport.java:28), net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:421), net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)],}
   Recent tasks from 1067-1097{}
 Profiler Position: N/A (disabled)
 Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
 Player Count: 2 / 20; [EntityPlayer['D_Soul'/52, l='world', x=10.61, y=122.00, z=49.95](D_Soul at 10.607428760171778,122.0,49.95193618024491), EntityPlayer['berleng_E'/83, l='world', x=6.48, y=124.87, z=38.46](berleng_E at 6.479790376466299,124.86933695946747,38.45618401542787)]
 Is Modded: Definitely; Server brand changed to 'craftbukkit'
 Type: Dedicated Server (map_server.txt)

--------------------------------------------------------------------------------------수정---------------------------------------------------------------------------

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서버구동기에 뜨는 현상 : 제 친구가 들어오면 [심각] 이라 뜨면서 영어로(?) 뭐라뭐라 떠요.. 그러다가 서버에 계속 있으면 튕겨요