prophunt error

2013-09-29 15:45:34 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'prophunt' in plugin PropHunt v1.38
	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:525)
	at net.minecraft.server.v1_5_R3.PlayerConnection.handleCommand(PlayerConnection.java:988)
	at net.minecraft.server.v1_5_R3.PlayerConnection.chat(PlayerConnection.java:899)
	at net.minecraft.server.v1_5_R3.PlayerConnection.a(PlayerConnection.java:846)
	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:115)
	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:583)
	at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:235)
	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)
Caused by: java.lang.NoSuchMethodError: org.bukkit.entity.Player.getMaxHealth()D
	at me.tomski.prophunt.PlayerManagement.healPlayer(PlayerManagement.java:60)
	at me.tomski.prophunt.PlayerManagement.gameStartPlayer(PlayerManagement.java:21)
	at me.tomski.prophunt.GameManager.freshPlayers(GameManager.java:298)
	at me.tomski.prophunt.GameManager.startGame(GameManager.java:198)
	at me.tomski.prophunt.PropHunt.onCommand(PropHunt.java:398)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
	... 15 more