severe

2013-06-03 16:45:55 [WARNING] [Towny] Task #42 for Towny v0.83.0.0 generated an exception
java.lang.NullPointerException
    at com.palmergames.bukkit.towny.permissions.TownyPerms.getNationRanks(Unknown Source)
    at com.palmergames.bukkit.towny.permissions.TownyPerms$1.run(Unknown Source)
    at org.bukkit.craftbukkit.v1_5_R3.scheduler.CraftTask.run(CraftTask.java:53)
    at org.bukkit.craftbukkit.v1_5_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345)
    at net.minecraft.server.v1_5_R3.MinecraftServer.r(MinecraftServer.java:513)
    at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:226)
    at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:477)
    at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:410)
    at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)