java.lang.NullPointerException
        at net.sf.l2j.gameserver.ai.L2AttackableAI.thinkAttack(L2AttackableAI.ja
va:541)
        at net.sf.l2j.gameserver.ai.L2AttackableAI.onEvtThink(L2AttackableAI.jav
a:767)
        at net.sf.l2j.gameserver.ai.L2CharacterAI.onEvtReadyToAct(L2CharacterAI.
java:650)
        at net.sf.l2j.gameserver.ai.AbstractAI.notifyEvent(AbstractAI.java:373)
        at net.sf.l2j.gameserver.ai.AbstractAI.notifyEvent(AbstractAI.java:323)
        at net.sf.l2j.gameserver.model.L2Character$NotifyAITask.run(L2Character.
java:1855)
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
access$301(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source
)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)