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Hey guys if anybody could help me solve this problem as to why my multiplayer Pixelmon 3.0 Server keeps crashing. The server will run for a few minutes than crash with this error popping up. Thanks.

---- Minecraft Crash Report ----
// Don't do that.

Time: 2/17/14 11:14 AM
Description: Exception in server tick loop

java.lang.NullPointerException
at pixelmon.spawning.spawners.SpawnerLand.getSpawnConditionY(SpawnerLand.java:36)
at pixelmon.spawning.PixelmonSpawner.doSpawning(PixelmonSpawner.java:116)
at pixelmon.spawning.PixelmonSpawner.tickEnd(PixelmonSpawner.java:303)
at cpw.mods.fml.common.SingleIntervalHandler.tickEnd(SingleIntervalHandler.java:34)
at cpw.mods.fml.common.FMLCommonHandler.tickEnd(FMLCommonHandler.java:141)
at cpw.mods.fml.common.FMLCommonHandler.onPostWorldTick(FMLCommonHandler.java:282)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:895)
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: Windows Server 2008 R2 (amd64) version 6.1
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 983717136 bytes (938 MB) / 1597767680 bytes (1523 MB) up to 7635533824 bytes (7281 MB)
JVM Flags: 1 total; -Xmx8192M
AABB Pool Size: 4040 (226240 bytes; 0 MB) allocated, 1037 (58072 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
CraftBukkit Information:
Running: MCPC+ version git-MCPC-Plus-jenkins-MCPC-Plus-147 (MC: 1.6.4) (Implementing API version 1.6.4-R2.1-SNAPSHOT) true
Plugins: { GroupManager v2.0 (2.12.1) (Phoenix) org.anjocaido.groupmanager.GroupManager [AnjoCaido, Gabriel Couto, ElgarL], Essentials v2.12.1 com.earth2me.essentials.Essentials [Zenexer, ementalo, Aelux, Brettflan, KimKandor, snowleo, ceulemans, Xeology, KHobbits, md_5, Iaccidentally], EssentialsChat v2.12.1 com.earth2me.essentials.chat.EssentialsChat [Zenexer, ementalo, Aelux, Brettflan, KimKandor, snowleo, ceulemans, Xeology, KHobbits, md_5, Okamosy, Iaccidentally], EssentialsProtect v2.12.1 com.earth2me.essentials.protect.EssentialsProtect [Zenexer, ementalo, Aelux, Brettflan, KimKandor, snowleo, ceulemans, Xeology, KHobbits], EssentialsSpawn v2.12.1 com.earth2me.essentials.spawn.EssentialsSpawn [Zenexer, ementalo, Aelux, Brettflan, KimKandor, snowleo, ceulemans, Xeology, KHobbits],}
Warnings: DEFAULT
Threads: { TIMED_WAITING Connection #8 write thread: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpWriterThread.run(TcpWriterThread.java:49)], TIMED_WAITING pool-2-thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(Unknown Source), java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(Unknown Source), java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(Unknown Source), java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.run(Unknown Source)], WAITING Reference Handler: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:503), java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)], RUNNABLE DestroyJavaVM: [], TIMED_WAITING Spigot Metrics Thread: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], WAITING pool-3-thread-1: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(Unknown Source), java.util.concurrent.locks.AbstractQueuedSynchronizer$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 #8 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)], 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$1.read(ConsoleReader.java:167), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:267), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:204), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:995), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLineSimple(ConsoleReader.java:1506), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:1153), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:1117), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:1105), net.minecraft.server.dedicated.DedicatedServerCommandThread.run(DedicatedServerCommandThread.java:42)], TIMED_WAITING Craft Scheduler Thread - 8: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source), java.util.concurrent.SynchronousQueue$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)], RUNNABLE Connection #26 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)], 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)], TIMED_WAITING Spigot Watchdog Thread: [java.lang.Thread.sleep(Native Method), org.spigotmc.WatchdogThread.run(WatchdogThread.java:85)], RUNNABLE Connection #16 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 Thread-5: [java.lang.Thread.sleep(Native Method), net.minecraft.server.dedicated.DedicatedServerSleepThread.run(DedicatedServerSleepThread.java:23)], TIMED_WAITING H2 Log Writer PIXELMON2: [java.lang.Object.wait(Native Method), org.h2.store.WriterThread.run(WriterThread.java:105), java.lang.Thread.run(Unknown Source)], 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.ServerListenThread.run(ServerListenThread.java:82)], RUNNABLE Chunk I/O Executor Thread-1: [java.util.zip.Inflater.inflateBytes(Native Method), java.util.zip.Inflater.inflate(Unknown Source), java.util.zip.InflaterInputStream.read(Unknown Source), java.io.BufferedInputStream.fill(Unknown Source), java.io.BufferedInputStream.read(Unknown Source), java.io.DataInputStream.readByte(Unknown Source), net.minecraft.nbt.NBTBase.func_130104_b(NBTBase.java:79), net.minecraft.nbt.NBTBase.func_74739_b(NBTBase.java:74), net.minecraft.nbt.CompressedStreamTools.func_74794_a(CompressedStreamTools.java:126), net.minecraft.world.chunk.storage.AnvilChunkLoader.loadChunk__Async_CB(AnvilChunkLoader.java:128), org.bukkit.craftbukkit.v1_6_R3.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:21), org.bukkit.craftbukkit.v1_6_R3.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:15), org.bukkit.craftbukkit.v1_6_R3.util.AsynchronousExecutor$Task.init(AsynchronousExecutor.java:150), org.bukkit.craftbukkit.v1_6_R3.util.AsynchronousExecutor$Task.initAsync(AsynchronousExecutor.java:95), org.bukkit.craftbukkit.v1_6_R3.util.AsynchronousExecutor$Task.run(AsynchronousExecutor.java:85), java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source), java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source), java.lang.Thread.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)], RUNNABLE Signal Dispatcher: [], TIMED_WAITING Connection #17 write thread: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpWriterThread.run(TcpWriterThread.java:49)], RUNNABLE Connection #47 write thread: [java.net.SocketOutputStream.socketWrite0(Native Method), java.net.SocketOutputStream.socketWrite(Unknown Source), java.net.SocketOutputStream.write(Unknown Source), org.bouncycastle.crypto.io.CipherOutputStream.write(Unknown Source), java.io.BufferedOutputStream.flushBuffer(Unknown Source), java.io.BufferedOutputStream.flush(Unknown Source), java.io.DataOutputStream.flush(Unknown Source), net.minecraft.network.TcpWriterThread.run(TcpWriterThread.java:34)], 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 Connection #41 write thread: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpWriterThread.run(TcpWriterThread.java:49)], TIMED_WAITING H2 File Lock Watchdog D:/TCAFiles/Users/SagarS/507/Minecraft/database/Pixelmon2.lock.db: [java.lang.Thread.sleep(Native Method), org.h2.store.FileLock.run(FileLock.java:493), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Connection #26 write thread: [java.lan
g.Thread.sleep(Native Method), net.minecraft.network.TcpWriterThread.run(TcpWriterThread.java:49)], 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 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$ConsoleLogThread.run(FMLRelaunchLog.java:83), java.lang.Thread.run(Unknown Source)], RUNNABLE Attach Listener: [], RUNNABLE Thread-9: [java.net.DualStackPlainDatagramSocketImpl.socketReceiveOrPeekData(Native Method), java.net.DualStackPlainDatagramSocketImpl.receive0(Unknown Source), java.net.AbstractPlainDatagramSocketImpl.receive(Unknown Source), java.net.DatagramSocket.receive(Unknown Source), net.minecraft.network.rcon.RConThreadQuery.run(RConThreadQuery.java:318), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Connection #15 write thread: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpWriterThread.run(TcpWriterThread.java:49)], TIMED_WAITING Thread-82: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpMasterThread.run(TcpMasterThread.java:17)], WAITING SeedGenerator Thread: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:503), sun.security.provider.SeedGenerator$ThreadedSeedGenerator.run(Unknown Source), java.lang.Thread.run(Unknown Source)], TIMED_WAITING File IO Thread: [java.lang.Thread.sleep(Native Method), net.minecraft.world.storage.ThreadedFileIOBase.func_75736_b(ThreadedFileIOBase.java:49), net.minecraft.world.storage.ThreadedFileIOBase.run(ThreadedFileIOBase.java:27), java.lang.Thread.run(Unknown Source)], TIMED_WAITING Craft Scheduler 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 Snooper Timer: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Unknown Source), java.util.TimerThread.run(Unknown Source)], RUNNABLE Connection #17 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 Connection #46 read thread: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpReaderThread.run(TcpReaderThread.java:27)], RUNNABLE Connection #47 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)], RUNNABLE Connection #41 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 Connection #16 write thread: [java.lang.Thread.sleep(Native Method), net.minecraft.network.TcpWriterThread.run(TcpWriterThread.java:49)],}
Recent tasks from 5815-5845{Essentials:[email protected]75,Essentials:[email protected],}
FML: MCP v8.11 FML v6.4.45.952 Minecraft Forge 9.11.1.952 4 mods loaded, 4 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{6.4.45.952} [Forge Mod Loader] (mcpc-plus.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{9.11.1.952} [Minecraft Forge] (mcpc-plus.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
pixelmon{3.0.0} [Pixelmon] (Pixelmon+3.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 2184 (122304 bytes; 0 MB) allocated, 1624 (90944 bytes; 0 MB) used
Player Count: 7 / 100; [EntityPlayerMP['smaller_carrot'/73, l='world', x=868.70, y=98.97, z=919.87](smaller_carrot at 868.6968336295392,98.96543079332722,919.8723989457825), EntityPlayerMP['thexonlyx1'/171, l='world', x=-182.35, y=64.02, z=290.91](thexonlyx1 at -182.347657079894,64.0155550727022,290.90891615235626), EntityPlayerMP['Endinator999'/264, l='world', x=222.22, y=67.25, z=1018.19](Endinator999 at 222.21774503113463,67.24918707874468,1018.1902202236752), EntityPlayerMP['JohnsonWatcher'/285, l='world', x=-182.27, y=68.00, z=254.75](JohnsonWatcher at -182.27410235830416,68.0,254.74971996487642), EntityPlayerMP['CamiSoshy'/411, l='world', x=-111.63, y=63.00, z=418.00](CamiSoshy at -111.62711577541336,63.0,418.00382534762684), EntityPlayerMP['dawson119'/1272, l='world', x=1938.28, y=26.00, z=491.69](dawson119 at 1938.282226398896,26.0,491.6941634314827), EntityPlayerMP['R_flame'/2043, l='world', x=536.39, y=91.00, z=-618.96](R_flame at 536.3926745946536,91.0,-618.9586258223392)]
Is Modded: Definitely; Server brand changed to 'mcpc,craftbukkit,fml,forge'
Type: Dedicated Server (map_server.txt)