Paintball Error

2013-05-13 19:41:13 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'paintball' in plugin PaintballBrawl v1.2
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:189)
at org.bukkit.craftbukkit.v1_5_R3.CraftServer.dispatchCommand(CraftServer.java:523)
at net.minecraft.server.v1_5_R3.PlayerConnection.handleCommand(PlayerConnection.java:965)
at net.minecraft.server.v1_5_R3.PlayerConnection.chat(PlayerConnection.java:883)
at net.minecraft.server.v1_5_R3.PlayerConnection.a(PlayerConnection.java:840)
at net.minecraft.server.v1_5_R3.Packet3Chat.handle(Packet3Chat.java:44)
at net.minecraft.server.v1_5_R3.NetworkManager.b(NetworkManager.java:292)
at net.minecraft.server.v1_5_R3.PlayerConnection.d(PlayerConnection.java:109)
at net.minecraft.server.v1_5_R3.ServerConnection.b(SourceFile:35)
at net.minecraft.server.v1_5_R3.DedicatedServerConnection.b(SourceFile:30)
at net.minecraft.server.v1_5_R3.MinecraftServer.r(MinecraftServer.java:581)
at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:226)
at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:477)
at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:410)
at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.NullPointerException
at org.bukkit.craftbukkit.v1_5_R3.entity.CraftPlayer.teleport(CraftPlayer.java:384)
at dread9nought.PaintBall.Arena.executePlayer(Arena.java:356)
at dread9nought.PaintBall.CommandHandler.onCommand(CommandHandler.java:425)
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
... 15 more