Bukkit

2011-12-05 10:45:02 [SEVERE] Could not pass event PLAYER_JOIN to HealthBar
java.lang.NullPointerException
    at me.plornt.healthbar.HealthBar.setTitle(HealthBar.java:65)
    at me.plornt.healthbar.HealthBarPlayerListener.onPlayerJoin(HealthBarPlayerListener.java:18)
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:260)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:58)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:339)
    at net.minecraft.server.ServerConfigurationManager.c(ServerConfigurationManager.java:129)
    at net.minecraft.server.NetLoginHandler.b(NetLoginHandler.java:113)
    at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:80)
    at net.minecraft.server.Packet1Login.a(SourceFile:59)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
    at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:46)
    at net.minecraft.server.NetworkListenThread.a(SourceFile:94)
    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:516)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:414)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)