--Crash Report Help-- Server crashes when I (the owner) tries to log on

Crash report here. Please help with the issue, as I cannot help players with their problems!
---- Minecraft Crash Report ----
// There are four lights!

Time: 4/13/14 2:05 PM
Description: Exception in server tick loop

java.lang.IllegalArgumentException: n must be positive
at java.util.Random.nextInt(Unknown Source)
at net.minecraft.server.v1_7_R1.BiomeDecorator.a(SourceFile:122)
at net.minecraft.server.v1_7_R1.BiomeDecorator.a(SourceFile:27)
at net.minecraft.server.v1_7_R1.BiomeBase.a(SourceFile:362)
at net.minecraft.server.v1_7_R1.BiomeForest.a(SourceFile:138)
at net.minecraft.server.v1_7_R1.ChunkProviderGenerate.getChunkAt(SourceFile:432)
at org.bukkit.craftbukkit.v1_7_R1.generator.NormalChunkGenerator.getChunkAt(NormalChunkGenerator.java:49)
at net.minecraft.server.v1_7_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:238)
at net.minecraft.server.v1_7_R1.Chunk.a(Chunk.java:840)
at org.bukkit.craftbukkit.v1_7_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:51)
at org.bukkit.craftbukkit.v1_7_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:13)
at org.bukkit.craftbukkit.v1_7_R1.util.AsynchronousExecutor$Task.finish(AsynchronousExecutor.java:188)
at org.bukkit.craftbukkit.v1_7_R1.util.AsynchronousExecutor.finishActive(AsynchronousExecutor.java:347)
at org.bukkit.craftbukkit.v1_7_R1.chunkio.ChunkIOExecutor.tick(ChunkIOExecutor.java:34)
at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:594)
at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250)
at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545)
at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457)
at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617)


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

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows XP (x86) version 5.1
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 88411264 bytes (84 MB) / 344731648 bytes (328 MB) up to 1621819392 bytes (1546 MB)
JVM Flags: 1 total; -Xmx1600M
AABB Pool Size: 658 (36848 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
CraftBukkit Information:
Running: CraftBukkit version git-Bukkit-1.7.2-R0.3-2-g85f5776-b3024jnks (MC: 1.7.2) (Implementing API version 1.7.2-R0.4-SNAPSHOT) true
Plugins: { bPermissions v2.10.7 de.bananaco.bpermissions.imp.Permissions [codename_B], PTweaks v6.0.10 me.devplugin.ptweaks.PerformanceTweaks [], Craftconomy3 v3.1.5 jenkins-Craftconomy3-2076 com.greatmancode.craftconomy3.tools.interfaces.BukkitLoader [Greatman], WorldEdit v5.6 com.sk89q.worldedit.bukkit.WorldEditPlugin [], GlacyStaffChat v1.1.3 net.gotchunow.plugins.glacystaffchat.GlacyStaffChat [], Simple-AutoSave v0.2.2 me.odium.autosave.autosave [], CommandBook v2.3 com.sk89q.commandbook.CommandBook [], Vault v1.2.31-b411 net.milkbowl.vault.Vault [cereal, Sleaker, mung3r], WorldGuard v5.9 com.sk89q.worldguard.bukkit.WorldGuardPlugin [], BlingHomingArrows v0.1 com.sethbling.blinghomingarrows.BlingHomingArrows [SethBling], DoubleJumpPlus v1.1 com.gmail.nyyd.ronn.djp.DoubleJumpPlus [ItsOneAndTwo], bChatManager v3.1.1 net.rymate.bchatmanager.bChatManager [rymate1234], EnjinMinecraftPlugin v2.5.5 com.enjin.officialplugin.EnjinMinecraftPlugin [www.Enjin.com], Shopkeepers v1.17.2 com.nisovin.shopkeepers.ShopkeepersPlugin [nisovin], BottledExp v1.7.3 me.sacnoth.bottledexp.BottledExp [sacnoth], XpBoost v0.2 me.test.test.test [], SignRanksPlus v0.6.6 com.empcraft.SignRanks [Empire92], BlingCombat v0.1 com.sethbling.blingcombat.BlingCombat [SethBling], ForceField v3.1.1 com.canal.main.ForceField.ForceField [], DeathTpPlus v3.9.16.2320 org.simiancage.DeathTpPlus.DeathTpPlus [Don Redhorse, mung3r], UsedRotten v0.1 net.cubesteak.bukkit.UsedRotten.UsedRotten [], EnchantPlus v1.3.1 com.darkblade12.enchantplus.EnchantPlus [DarkBlade12], BlingBall v0.1 com.sethbling.blingball.BlingBall [SethBling], MobCatcher v3.15 me.jordan.mobcatcher.MobCatcher [Malikk], SafeEdit v1.2.0 me.frodenkvist.safeedit.SafeEdit [], ecoCreature v0.2.2-b303 se.crafted.chrisb.ecoCreature.ecoCreature [chrisb, mung3r],}
Warnings: DEFAULT
Threads: { TIMED_WAITING Timer-0: [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)], TIMED_WAITING pool-3-thread-7: [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$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], WAITING Finalizer: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(Unknown Source), java.lang.ref.ReferenceQueue.remove(Unknown Source), java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)], WAITING Reference Handler: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:503), java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)], RUNNABLE Netty IO #3: [sun.nio.ch.WindowsSelectorImpl$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), net.minecraft.util.io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:591), net.minecraft.util.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:301), net.minecraft.util.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101), java.lang.Thread.run(Unknown Source)], RUNNABLE Netty IO #0: [sun.nio.ch.WindowsSelectorImpl$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), net.minecraft.util.io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:591), net.minecraft.util.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:301), net.minecraft.util.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101), java.lang.Thread.run(Unknown Source)], WAITING Chunk I/O Executor Thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$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$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Server Infinisleeper: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_7_R1.ThreadSleepForever.run(SourceFile:62)], RUNNABLE Netty IO #1: [sun.nio.ch.WindowsSelectorImpl$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), net.minecraft.util.io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:591), net.minecraft.util.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:301), net.minecraft.util.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101), java.lang.Thread.run(Unknown Source)], RUNNABLE Netty IO #2: [sun.nio.ch.WindowsSelectorImpl$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), net.minecraft.util.io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:591), net.minecraft.util.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:301), net.minecraft.util.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101), java.lang.Thread.run(Unknown Source)], RUNNABLE Signal Dispatcher: [], RUNNABLE Server console handler: [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$1.read(ConsoleReader.java:167), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:267), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:204), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:995), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:1167), net.minecraft.server.v1_7_R1.ThreadCommandReader.run(ThreadCommandReader.java:32)], RUNNABLE Attach Listener: [], RUNNABLE Thread-5: [java.io.FileOutputStream.writeBytes(Native Method), java.io.FileOutputStream.write(Unknown Source), java.io.BufferedOutputStream.flushBuffer(Unknown Source), java.io.BufferedOutputStream.flush(Unknown Source), java.io.PrintStream.write(Unknown Source), org.fusesource.jansi.AnsiOutputStream.write(AnsiOutputStream.java:82), java.io.FilterOutputStream.write(Unknown Source), java.io.PrintStream.write(Unknown Source), java.io.FilterOutputStream.write(Unknown Source), org.bukkit.craftbukkit.v1_7_R1.util.TerminalConsoleWriterThread.run(TerminalConsoleWriterThread.java:34), java.lang.Thread.run(Unknown Source)], RUNNABLE DestroyJavaVM: [], TIMED_WAITING Thread-9: [java.lang.Thread.sleep(Native Method), de.bananaco.bpermissions.imp.loadmanager.MainThread.check(MainThread.java:54), de.bananaco.bpermissions.imp.loadmanager.MainThread.run(MainThread.java:26)], TIMED_WAITING File IO Thread: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_7_R1.FileIOThread.b(SourceFile:44), net.minecraft.server.v1_7_R1.FileIOThread.run(SourceFile:23), java.lang.Thread.run(Unknown Source)], TIMED_WAITING pool-3-thread-9: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source), java.util.concurrent.SynchronousQueue$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)], RUNNABLE Server thread: [java.lang.Thread.dumpThreads(Native Method), java.lang.Thread.getAllStackTraces(Unknown Source), org.bukkit.craftbukkit.v1_7_R1.CraftCrashReport.call(CraftCrashReport.java:28), net.minecraft.server.v1_7_R1.CrashReportSystemDetails.a(SourceFile:74), net.minecraft.server.v1_7_R1.CrashReport.h(CrashReport.java:45), net.minecraft.server.v1_7_R1.CrashReport.<init>(CrashReport.java:33), net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:474), net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617)], TIMED_WAITING pool-3-thread-8: [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)],}
Recent tasks from 6250-6280{EnjinMinecraftPlugin:com.enjin.officialplugin.tpsmeter.MonitorTPS@6309,}
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
Player Count: 1 / 10; [EntityPlayer['Piebloxxer'/257, l='Virtude', x=688.99, y=150.23, z=1141.51](Piebloxxer at 688.9867642406966,150.2349480198857,1141.5131901348643)]
Is Modded: Definitely; Server brand changed to 'CraftBukkit'
Type: Dedicated Server (map_server.txt)