Redstone crash

Not sure what exactly what is causing this crash i named it the redstone crash as per the error i get.
heres my error message

Code:

2011-02-09 11:54:34 [SEVERE] Unexpected exception
java.lang.NullPointerException
    at net.minecraft.server.BlockNote.b(SourceFile:22)
    at net.minecraft.server.World.l(World.java:457)
    at net.minecraft.server.World.h(World.java:438)
    at net.minecraft.server.BlockRedstoneWire.g(BlockRedstoneWire.java:45)
    at net.minecraft.server.BlockRedstoneWire.b(BlockRedstoneWire.java:281)

the last 4 lines i get about 600 times then the server crashes and i have to do a restart. Anyone seen this before.


following plugins running
CB build 293
dynmap
BigBrother
Antibuild
informant
LWC
multiverse
permissions
worldedit
worldguard
extendday
hotswap

 

Try removing the plugins and finding which one causes the bug.

 

See the problem with this is its a random interval between when it crashes. sometimes up to 5 or 6 hours. and alot of my plugins i really cant have the server live without like big brother and antibuild.

 

I remember reading about this problem (blocknote error) somewhere today, try search function if you find it, maybe there will be an answer later today.