[SEVERE] java.util.ConcurrentModificationException

My server has started to crash when I use a certain teleport that goes to a different world. When you use the teleport, you do teleport to the world, but you just float there with not a single thing loaded and that is when the error pops up. it takes about 5-10 seconds after the error for the server to actually crash and kick the players. Here is the full error report with system info:

Code:

---- Minecraft Crash Report ----
// Why did you do that?
 
Time: 3/3/13 1:40 PM
Description: Exception in server tick loop
 
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.next(Unknown Source)
at net.minecraft.server.v1_4_R1.EntityTrackerEntry.track(EntityTrackerEntry.java:85)
at net.minecraft.server.v1_4_R1.EntityTracker.updatePlayers(EntityTracker.java:138)
at net.minecraft.server.v1_4_R1.MinecraftServer.r(MinecraftServer.java:589)
at net.minecraft.server.v1_4_R1.DedicatedServer.r(DedicatedServer.java:224)
at net.minecraft.server.v1_4_R1.MinecraftServer.q(MinecraftServer.java:494)
at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)
 
 
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
 
-- System Details --
Details:
Minecraft Version: 1.4.7
Operating System: Windows Server 2008 R2 (amd64) version 6.1
Java Version: 1.7.0_05, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 216354016 bytes (206 MB) / 379584512 bytes (362 MB) up to 2863333376 bytes (2730 MB)
JVM Flags: 1 total; -Xmx3072M
AABB Pool Size: 1513 (84728 bytes; 0 MB) allocated, 940 (52640 bytes; 0 MB) used
Suspicious classes: $Proxy3, $Proxy4, $Proxy12[com.avaje.ebean.EbeanServer], [com.avaje.ebean.config.dbplatform.DatabasePlatform, SQLitePlatform], [com.google.common.base.Predicate, Function, Joiner, ...], [com.google.common.cache.CacheLoader, SupplierToCacheLoader, FunctionToCacheLoader, ...], [com.google.common.collect.ImmutableCollection, ImmutableList, Maps, ...], [com.google.common.io.Files, InputSupplier, OutputSupplier], [com.google.common.util.concurrent.UncheckedExecutionException], [com.mysql.jdbc.NonRegisteringDriver, Driver, StringUtils, ...], [com.mysql.jdbc.exceptions.MySQLTransientException, MySQLTimeoutException, MySQLNonTransientException, ...], [com.mysql.jdbc.log.Log, StandardLogger, NullLogger, ...], [com.mysql.jdbc.util.LRUCache, ReadAheadInputStream], [net.minecraft.server.v1_4_R1.ICommandListener, IMojangStatistics, IDataManager, ...], [org.apache.commons.lang.Validate, UnhandledException, StringUtils, ...], [org.apache.commons.lang.exception.Nestable, NestableRuntimeException], [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, GsonBuilder, ...], [org.bukkit.craftbukkit.libs.com.google.gson.annotations.SerializedName], [org.bukkit.craftbukkit.libs.com.google.gson.internal.Excluder, $Gson$Preconditions, Primitives, ...], [org.bukkit.craftbukkit.libs.com.google.gson.internal.bind.JsonTreeReader, JsonTreeWriter, BigDecimalTypeAdapter, ...], [org.bukkit.craftbukkit.libs.com.google.gson.reflect.TypeToken], [org.bukkit.craftbukkit.libs.com.google.gson.stream.JsonReader, JsonWriter, MalformedJsonException, ...], [org.bukkit.craftbukkit.libs.jline.Terminal, TerminalSupport, UnsupportedTerminal, ...], [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.libs.joptsimple.util.KeyValuePair], [org.bukkit.craftbukkit.v1_4_R1.LoggerOutputStream, CraftServer, CraftOfflinePlayer, ...], [org.bukkit.craftbukkit.v1_4_R1.block.CraftBlock, CraftBlockState, CraftSign], [org.bukkit.craftbukkit.v1_4_R1.chunkio.ChunkIOExecutor, ChunkIOProvider, QueuedChunk], [org.bukkit.craftbukkit.v1_4_R1.command.ServerCommandSender, CraftConsoleCommandSender, ColouredConsoleSender, ...], [org.bukkit.craftbukkit.v1_4_R1.conversations.ConversationTracker], [org.bukkit.craftbukkit.v1_4_R1.enchantments.CraftEnchantment], [org.bukkit.craftbukkit.v1_4_R1.entity.CraftEntity, CraftLivingEntity, CraftHumanEntity, ...], [org.bukkit.craftbukkit.v1_4_R1.event.CraftEventFactory], [org.bukkit.craftbukkit.v1_4_R1.generator.InternalChunkGenerator, CustomChunkGenerator, NormalChunkGenerator, ...], [org.bukkit.craftbukkit.v1_4_R1.help.SimpleHelpMap, CommandAliasHelpTopic, HelpYamlReader, ...], [org.bukkit.craftbukkit.v1_4_R1.inventory.CraftItemStack, CraftRecipe, CraftShapedRecipe, ...], [org.bukkit.craftbukkit.v1_4_R1.map.CraftMapView, CraftMapRenderer, RenderData, ...], [org.bukkit.craftbukkit.v1_4_R1.metadata.EntityMetadataStore, PlayerMetadataStore, WorldMetadataStore, ...], [org.bukkit.craftbukkit.v1_4_R1.potion.CraftPotionEffectType, CraftPotionBrewer], [org.bukkit.craftbukkit.v1_4_R1.scheduler.CraftScheduler, CraftTask, CraftAsyncTask, ...], [org.bukkit.craftbukkit.v1_4_R1.updater.AutoUpdater, BukkitDLUpdaterService, DateDeserializer, ...], [org.bukkit.craftbukkit.v1_4_R1.util.Waitable, ServerShutdownThread, TerminalConsoleHandler, ...], [org.bukkit.enchantments.Enchantment, EnchantmentWrapper], [org.bukkit.entity.Entity, Damageable, LivingEntity, ...], [org.bukkit.event.Event, Cancellable, Listener, ...], [org.bukkit.event.block.BlockEvent, BlockFadeEvent, BlockGrowEvent, ...], [org.bukkit.event.enchantment.EnchantItemEvent], [org.bukkit.event.entity.EntityEvent, EntityInteractEvent, EntityDamageEvent, ...], [org.bukkit.event.hanging.HangingEvent, HangingPlaceEvent, HangingBreakEvent, ...], [org.bukkit.event.inventory.FurnaceSmeltEvent, FurnaceBurnEvent, InventoryEvent, ...], [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, VehicleExitEvent, VehicleEnterEvent, ...], [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, Recipe, ShapedRecipe, ...], [org.bukkit.inventory.meta.ItemMeta, Repairable, BookMeta, ...], [org.bukkit.map.MapView, MapCanvas, MapRenderer, ...], [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, BukkitWorker, ...], [org.bukkit.util.Vector, BlockVector, Java15Compat, ...], [org.bukkit.util.permissions.DefaultPermissions, CommandPermissions, BroadcastPermissions], [org.fusesource.jansi.Ansi, NoAnsi, Color, ...], [org.json.simple.JSONAware, JSONStreamAware, JSONObject, ...], [org.json.simple.parser.JSONParser, ParseException, Yylex, ...], [org.sqlite.JDBC, Conn, SQLiteConfig, ...], [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, EmitterException, ...], [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, Property, ...], [org.yaml.snakeyaml.nodes.Node, CollectionNode, MappingNode, ...], [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: 3, tallocated: 63
CraftBukkit Information: 
   Running: CraftBukkit version git-Bukkit-1.4.7-R1.0-b2624jnks (MC: 1.4.7) (Implementing API version 1.4.7-R1.0) true
   Plugins: { WorldBorder v1.6.1 com.wimbli.WorldBorder.WorldBorder [Brettflan], LagMeter v1.12.0 main.java.com.webkonsept.minecraft.lagmeter.LagMeter [TheLunarFrog, DemmyDemon], MultiWorld v3.7.1 multiworld.MultiWorldPlugin [ferrybig], HideStream v2.6 com.mrmag518.HideStream.HideStream [mrmag518], WorldEdit v5.3 com.sk89q.worldedit.bukkit.WorldEditPlugin [], BukkitCompat vr22a com.mcmyadmin.bukkitcompat.BukkitCompat [PhonicUK], VoxelSniper v5.168.5-SNAPSHOT-jnks195 com.thevoxelbox.voxelsniper.VoxelSniper [przerwap, MikeMatrix, Gavjenks, giltwist, psanker, Deamon5550, DivineRage], TagAPI v1.9.1 org.kitteh.tag.TagAPI [mbaxter], PowerBow v0.1 me.Weasel_Squeezer.PowerBow.PowerBow [Weasel_Squeezer], SorcererManager v0.1 me.Weasel_Squeezer.SorcererManager.SorcererManager [Weasel_Squeezer], Vault v1.2.17-b224 net.milkbowl.vault.Vault [cereal, Sleaker, mung3r], PermissionsEx v1.19.5 ru.tehkode.permissions.bukkit.PermissionsEx [t3hk0d3], WorldGuard v5.7.1 com.sk89q.worldguard.bukkit.WorldGuardPlugin [], MineResetLite vdev-jnk16 com.koletar.jj.mineresetlite.MineResetLite [jjkoletar], PerformanceMonitor v1.6.6 me.mshax085.PerformanceMonitor.Monitor [MsHax085], RedBlocks v0.5 com.operontech.redblocks.RedBlocks [], BattleCombatTag v1.0.5 com.lds.combatTag.CombatTag [lDucks], QuestControl v0.1 com.Weasel_Squeezer.QuestControl.QuestControl [Weasel_Squeezer], Announcer v1.3.4 me.declanmc96.Announcer.announcer [declanmc96], pvparena v1.0.1.61 net.slipcor.pvparena.PVPArena [slipcor, slipcor], MasterPromote v1.5.4 me.sinnoh.MasterPromote.MasterPromote [Sinnoh], PrettySigns v0.3 com.mcacraft.prettysigns.PrettySigns [], SimpleSpleef v3.4.2 net.kaoslabs.simplespleef.SimpleSpleef [[Kaos, zorlax, tuxed]], Modifyworld v1.19.4 ru.tehkode.modifyworld.bukkit.Modifyworld [t3hk0d3], MonsterBox v0.8.4 tux2.MonsterBox.MonsterBox [], SimpleClans v2.3.4 net.sacredlabyrinth.phaed.simpleclans.SimpleClans [], MCtoDB v0.1 com.DeadmanDungeons.MCtoDB.MCtoDB [Weasel_Squeezer], ButtonWarp v2.1.2 com.codisimus.plugins.buttonwarp.ButtonWarp [Codisimus], MOCDBLib v8 moc.MOCDBLib.MOCDBLib [cwingrav], Essentials v2.9.3 com.earth2me.essentials.Essentials [Zenexer, ementalo, Aelux, Brettflan, KimKandor, snowleo, ceulemans, Xeology, KHobbits, md_5, Iaccidentally], SimpleRegionMarket v3.2.0 me.ienze.SimpleRegionMarket.SimpleRegionMarket [Ienze, theZorro266], ShowCaseStandalone v1.49 com.kellerkindt.scs.ShowCaseStandalone [kellerkindt, sorklin, bitfreeze, Ryzko, rtainc], CommandSigns v1.8.4 org.zonedabone.commandsigns.CommandSigns [zonedabone, CJxD, HansAnderson], FarmControl v2.1 me.Weasel_Squeezer.FarmControl.FarmControl [Weasel_Squeezer], ChatManager v1.19.1 ru.tehkode.chatmanager.bukkit.ChatManager [t3hk0d3], EssentialsSpawn v2.9.3 com.earth2me.essentials.spawn.EssentialsSpawn [Zenexer, ementalo, Aelux, Brettflan, KimKandor, snowleo, ceulemans, Xeology, KHobbits], VirtualChest v5.6.5 com.zone.vchest.VirtualChestPlugin [zonedabone, Balor],}
   Warnings: DEFAULT
   Threads: { WAITING PermissionsEx-Cleaner: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:503), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], RUNNABLE DestroyJavaVM: [], TIMED_WAITING pool-1-thread-9: [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$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], TIMED_WAITING File IO Thread: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_4_R1.FileIOThread.b(SourceFile:36), net.minecraft.server.v1_4_R1.FileIOThread.run(SourceFile:22), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Thread-4: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_4_R1.ThreadSleepForever.run(SourceFile:52)], WAITING Chunk I/O Executor Thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$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 Thread-5: [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.v1_4_R1.ThreadCommandReader.run(ThreadCommandReader.java:33)], RUNNABLE Listen thread: [java.net.DualStackPlainSocketImpl.accept0(Native Method), java.net.DualStackPlainSocketImpl.socketAccept(Unknown Source), java.net.AbstractPlainSocketImpl.accept(Unknown Source), java.net.PlainSocketImpl.accept(Unknown Source), java.net.ServerSocket.implAccept(Unknown Source), java.net.ServerSocket.accept(Unknown Source), net.minecraft.server.v1_4_R1.DedicatedServerConnectionThread.run(DedicatedServerConnectionThread.java:62)], TIMED_WAITING Snooper Timer: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], TIMED_WAITING Connection #661 write thread: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_4_R1.NetworkWriterThread.run(NetworkWriterThread.java:38)], RUNNABLE Connection #661 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), net.minecraft.v1_4_R1.org.bouncycastle.crypto.io.CipherInputStream.a(Unknown Source), net.minecraft.v1_4_R1.org.bouncycastle.crypto.io.CipherInputStream.read(Unknown Source), java.io.FilterInputStream.read(Unknown Source), net.minecraft.server.v1_4_R1.Packet.a(Packet.java:93), net.minecraft.server.v1_4_R1.NetworkManager.i(NetworkManager.java:190), net.minecraft.server.v1_4_R1.NetworkManager.c(NetworkManager.java:344), net.minecraft.server.v1_4_R1.NetworkReaderThread.run(SourceFile:93)], 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 Reference Handler: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:503), java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)], TIMED_WAITING Connection #483 write thread: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_4_R1.NetworkWriterThread.run(NetworkWriterThread.java:38)], RUNNABLE Attach Listener: [], RUNNABLE Connection #483 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), net.minecraft.v1_4_R1.org.bouncycastle.crypto.io.CipherInputStream.a(Unknown Source), net.minecraft.v1_4_R1.org.bouncycastle.crypto.io.CipherInputStream.read(Unknown Source), java.io.FilterInputStream.read(Unknown Source), net.minecraft.server.v1_4_R1.Packet.a(Packet.java:93), net.minecraft.server.v1_4_R1.NetworkManager.i(NetworkManager.java:190), net.minecraft.server.v1_4_R1.NetworkManager.c(NetworkManager.java:344), net.minecraft.server.v1_4_R1.NetworkReaderThread.run(SourceFile:93)], RUNNABLE Server thread: [java.lang.Thread.dumpThreads(Native Method), java.lang.Thread.getAllStackTraces(Unknown Source), org.bukkit.craftbukkit.v1_4_R1.CraftCrashReport.call(CraftCrashReport.java:28), net.minecraft.server.v1_4_R1.CrashReportSystemDetails.a(SourceFile:74), net.minecraft.server.v1_4_R1.CrashReport.h(CrashReport.java:43), net.minecraft.server.v1_4_R1.CrashReport.<init>(CrashReport.java:30), net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:444), net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)], RUNNABLE Signal Dispatcher: [],}
   Recent tasks from 129264-129294{ButtonWarp:com.codisimus.plugins.buttonwarp.ButtonWarpListener$2@129323,ButtonWarp:com.codisimus.plugins.buttonwarp.Warp$1@129324,}
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NoSuchFieldError: worldServer
Player Count: 2 / 36; [EntityPlayer['kanno41'/3852412, l='empire', x=876.19, y=16.00, z=408.34](kanno41 at 876.1908796434187,16.0,408.34153354445687), EntityPlayer['Weasel_Squeezer'/2772155, l='Cynelia', x=215.50, y=62.00, z=143.50](Weasel_Squeezer at 215.50236764561993,62.0,143.5032798447554)]
Is Modded: Definitely; Server brand changed to 'craftbukkit'
Type: Dedicated Server (map_server.txt)n

I am using the ButtonWarp plugin for this warp. I made the warp to that world last night and it worked fine then, but now it doesn't. The only things I did was delete player.dat files in my worlds. Oddly though, the world that this teleport goes to has no player.dat files...
Anyone know what is causing this? I need it fixed ASAP
Thanks!

 

Did you take a look at the sticky?