combust exception for Cogito

gistfile1.txt

2012-01-08 17:51:17 [INFO] false
2012-01-08 17:51:17 [SEVERE] java.lang.Exception
2012-01-08 17:51:17 [SEVERE]    at edgruberman.bukkit.simpledeathnotices.DamageR
eport.recordCombuster(DamageReport.java:183)
2012-01-08 17:51:17 [SEVERE]    at edgruberman.bukkit.simpledeathnotices.DeathMo
nitor.onEntityCombust(DeathMonitor.java:53)
2012-01-08 17:51:17 [SEVERE]    at org.bukkit.plugin.java.JavaPluginLoader$66.ex
ecute(JavaPluginLoader.java:727)
2012-01-08 17:51:17 [SEVERE]    at org.bukkit.plugin.RegisteredListener.callEven
t(RegisteredListener.java:62)
2012-01-08 17:51:17 [SEVERE]    at org.bukkit.plugin.SimplePluginManager.callEve
nt(SimplePluginManager.java:339)
2012-01-08 17:51:17 [SEVERE]    at net.minecraft.server.Entity.move(Entity.java:
630)
2012-01-08 17:51:17 [SEVERE]    at net.minecraft.server.NetServerHandler.a(NetSe
rverHandler.java:332)
2012-01-08 17:51:17 [SEVERE]    at net.minecraft.server.Packet10Flying.a(SourceF
ile:126)
2012-01-08 17:51:17 [SEVERE]    at net.minecraft.server.NetworkManager.b(Network
Manager.java:226)
2012-01-08 17:51:17 [SEVERE]    at net.minecraft.server.NetServerHandler.a(NetSe
rverHandler.java:93)
2012-01-08 17:51:17 [SEVERE]    at net.minecraft.server.NetworkListenThread.a(So
urceFile:108)
2012-01-08 17:51:17 [SEVERE]    at net.minecraft.server.MinecraftServer.w(Minecr
aftServer.java:527)
2012-01-08 17:51:17 [SEVERE]    at net.minecraft.server.MinecraftServer.run(Mine
craftServer.java:425)
2012-01-08 17:51:17 [SEVERE]    at net.minecraft.server.ThreadServerApplication.
run(SourceFile:457)