Bukkit

What steps will reproduce the problem?
1. Just running the server?

What is the expected output? What do you see instead?
I'm assuming that it is supposed to work and this error comes up even when I don't touch any configs.

What version of the product are you using?
v0.6 preview hotfix 2

Do you have an error log of what happened?
Error occurred while enabling sRPG v0.5alpha4 (Is it up to date?): Health must be between 0 and 10
java.lang.IllegalArgumentException: Health must be between 0 and 10
    at org.bukkit.craftbukkit.entity.CraftLivingEntity.setHealth(CraftLivingEntity.java:42)
    at com.behindthemirrors.minecraft.sRPG.listeners.SpawnEventListener.onCreatureSpawn(SpawnEventListener.java:66)
    at com.behindthemirrors.minecraft.sRPG.listeners.SpawnEventListener.addExistingCreatures(SpawnEventListener.java:36)
    at com.behindthemirrors.minecraft.sRPG.SRPG.onEnable(SRPG.java:105)
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:188)
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:968)
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:280)
    at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:186)
    at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:169)
    at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:348)
    at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:335)
    at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:165)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:399)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)

Please provide any additional information below.