dt error

2013-02-04 06:33:14 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'dt' in plugin DragonTravel v1.8.5
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:186)
	at org.bukkit.craftbukkit.v1_4_R1.CraftServer.dispatchCommand(CraftServer.java:514)
	at net.minecraft.server.v1_4_R1.PlayerConnection.handleCommand(PlayerConnection.java:979)
	at net.minecraft.server.v1_4_R1.PlayerConnection.chat(PlayerConnection.java:897)
	at net.minecraft.server.v1_4_R1.PlayerConnection.a(PlayerConnection.java:852)
	at net.minecraft.server.v1_4_R1.Packet3Chat.handle(Packet3Chat.java:44)
	at net.minecraft.server.v1_4_R1.NetworkManager.b(NetworkManager.java:290)
	at net.minecraft.server.v1_4_R1.PlayerConnection.d(PlayerConnection.java:112)
	at net.minecraft.server.v1_4_R1.ServerConnection.b(SourceFile:39)
	at net.minecraft.server.v1_4_R1.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.v1_4_R1.MinecraftServer.r(MinecraftServer.java:598)
	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)
Caused by: java.lang.NoSuchFieldError: bukkitEntity
	at com.xemsdoom.dt.XemDragon.getEntity(XemDragon.java:98)
	at com.xemsdoom.dt.modules.Travels.mountDragon(Travels.java:70)
	at com.xemsdoom.dt.modules.Travels.travelDestination(Travels.java:292)
	at com.xemsdoom.dt.commands.Commands.onCommand(Commands.java:452)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
	... 15 more