Bukkit

Hi,
I would report this:

2011-12-29 19:20:11 [WARNING] Task of 'HawkEye' generated an exception
java.lang.ClassCastException: net.minecraft.server.TileEntitySign cannot be cast to net.minecraft.server.TileEntityChest
    at net.minecraft.server.BlockChest.remove(SourceFile:225)
    at org.getspout.spout.block.mcblock.CustomChest.remove(CustomChest.java:210)
    at net.minecraft.server.Chunk.a(Chunk.java:384)
    at net.minecraft.server.World.setRawTypeId(World.java:367)
    at net.minecraft.server.World.setTypeId(World.java:434)
    at org.bukkit.craftbukkit.block.CraftBlock.setTypeId(CraftBlock.java:77)
    at uk.co.oliwali.HawkEye.util.BlockUtil.setBlockString(BlockUtil.java:76)
    at uk.co.oliwali.HawkEye.entry.BlockEntry.rollback(BlockEntry.java:34)
    at uk.co.oliwali.HawkEye.Rollback.run(Rollback.java:84)
    at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:137)
    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:493)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:425)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:457)

This happened after the command "/ha rollback p:<player>"
Regards.