2011-11-25 15:59:26 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'hero' in plugin Heroes v1.3.1-b803
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:163)
    at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:355)
    at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:757)
    at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:722)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:715)
    at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:33)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:92)
    at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java:501)
    at net.minecraft.server.NetworkListenThread.a(SourceFile:108)
    at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:471)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:374)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:417)
Caused by: java.lang.NullPointerException
    at com.herocraftonline.dev.heroes.hero.Hero.isMaster(Hero.java:822)
    at com.herocraftonline.dev.heroes.command.commands.ProfessionCommand$StateA.execute(ProfessionCommand.java:87)
    at com.herocraftonline.dev.heroes.command.BasicInteractiveCommand.execute(BasicInteractiveCommand.java:46)
    at com.herocraftonline.dev.heroes.command.CommandHandler.dispatch(CommandHandler.java:72)
    at com.herocraftonline.dev.heroes.Heroes.onCommand(Heroes.java:177)
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
    ... 13 more