RedStone_Change Event Error.

So I Updated FluidDispensors, no one had any issues with The REDSTONE_CHANGE. but now im CB740 im constantly Receiving this error when ever i flip the switch repeatedly or use a 5 clock..

how would i attempt to correct this?

Code:

2011-05-07 23:43:04 [SEVERE] Could not pass event REDSTONE_CHANGE to FluidDispensers
java.lang.NullPointerException
    at com.chernobyl.bukkit.fluiddispensers.DispenserListener.isFull(DispenserListener.java:47)
    at com.chernobyl.bukkit.fluiddispensers.DispenserListener.onBlockRedstoneChange(DispenserListener.java:33)
    at org.bukkit.plugin.java.JavaPluginLoader$31.execute(JavaPluginLoader.java:388)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:59)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:257)
    at net.minecraft.server.BlockRedstoneWire.a(BlockRedstoneWire.java:110)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:40)
    at net.minecraft.server.BlockRedstoneWire.doPhysics(BlockRedstoneWire.java:287)
    at net.minecraft.server.World.k(World.java:386)
    at net.minecraft.server.World.applyPhysics(World.java:361)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:48)
    at net.minecraft.server.BlockRedstoneWire.doPhysics(BlockRedstoneWire.java:287)
    at net.minecraft.server.World.k(World.java:386)
    at net.minecraft.server.World.applyPhysics(World.java:361)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:48)
    at net.minecraft.server.BlockRedstoneWire.doPhysics(BlockRedstoneWire.java:287)
    at net.minecraft.server.World.k(World.java:386)
    at net.minecraft.server.World.applyPhysics(World.java:361)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:48)
    at net.minecraft.server.BlockRedstoneWire.doPhysics(BlockRedstoneWire.java:287)
    at net.minecraft.server.World.k(World.java:386)
    at net.minecraft.server.World.applyPhysics(World.java:361)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:48)
    at net.minecraft.server.BlockRedstoneWire.doPhysics(BlockRedstoneWire.java:287)
    at net.minecraft.server.World.k(World.java:386)
    at net.minecraft.server.World.applyPhysics(World.java:366)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:48)
    at net.minecraft.server.BlockRedstoneWire.doPhysics(BlockRedstoneWire.java:287)
    at net.minecraft.server.World.k(World.java:386)
    at net.minecraft.server.World.applyPhysics(World.java:366)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:48)
    at net.minecraft.server.BlockRedstoneWire.doPhysics(BlockRedstoneWire.java:287)
    at net.minecraft.server.World.k(World.java:386)
    at net.minecraft.server.World.applyPhysics(World.java:366)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:48)
    at net.minecraft.server.BlockRedstoneWire.doPhysics(BlockRedstoneWire.java:287)
    at net.minecraft.server.World.k(World.java:386)
    at net.minecraft.server.World.applyPhysics(World.java:366)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:48)
    at net.minecraft.server.BlockRedstoneWire.doPhysics(BlockRedstoneWire.java:287)
    at net.minecraft.server.World.k(World.java:386)
    at net.minecraft.server.World.applyPhysics(World.java:366)
    at net.minecraft.server.World.update(World.java:334)
    at net.minecraft.server.World.setData(World.java:279)
    at net.minecraft.server.BlockLever.interact(BlockLever.java:143)
    at net.minecraft.server.BlockLever.b(BlockLever.java:117)
    at net.minecraft.server.ItemInWorldManager.dig(ItemInWorldManager.java:75)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:433)
    at net.minecraft.server.Packet14BlockDig.a(SourceFile:42)
    at net.minecraft.server.NetworkManager.a(NetworkManager.java:195)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:74)
    at net.minecraft.server.NetworkListenThread.a(SourceFile:100)
    at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:370)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:285)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:394)