Bukkit

What steps will reproduce the problem?
1. Start up server
2.
3.

What is the expected output? What do you see instead?
Expect successful start up

What version of the product are you using?
ControllerBlock 1.52? (Reports 1.18, but am 99% sure I am using 1.52)
Bukkit 1.1 b1818

Do you have an error log of what happened?
2012-01-25 13:21:08 [WARNING] Task of 'ControllerBlock' generated an exception
java.lang.NullPointerException
        at net.minecraft.server.Chunk.a(Chunk.java:403)
        at net.minecraft.server.World.setRawTypeId(World.java:371)
        at net.minecraft.server.World.setTypeId(World.java:438)
        at org.bukkit.craftbukkit.block.CraftBlock.setTypeId(CraftBlock.java:88)
        at org.bukkit.craftbukkit.block.CraftBlock.setType(CraftBlock.java:84)
        at net.servfire.hellfire.bukkit.ControllerBlock.CBlock.turnOn(CBlock.java:206)
        at net.servfire.hellfire.bukkit.ControllerBlock.CBlockRedstoneCheck.run(CBlockRedstoneCheck.java:38)
        at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:137)
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:502)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:434)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)

Please provide any additional information below.