Exception in thread "General Pool-3" java.lang.ClassCastException: net.sf.l2j.ga
meserver.model.actor.instance.L2PcInstance cannot be cast to net.sf.l2j.gameserv
er.model.actor.instance.L2NpcInstance
        at net.sf.l2j.gameserver.skills.Formulas.calcPhysDam(Formulas.java:1374)

        at net.sf.l2j.gameserver.model.L2Character.doAttackHitSimple(L2Character
.java:1544)
        at net.sf.l2j.gameserver.model.L2Character.doAttackHitSimple(L2Character
.java:1520)
        at net.sf.l2j.gameserver.model.L2Character.doAttack(L2Character.java:109
5)
        at net.sf.l2j.gameserver.model.L2Character$AIAccessor.doAttack(L2Charact
er.java:4299)
        at net.sf.l2j.gameserver.ai.L2AttackableAI.thinkAttack(L2AttackableAI.ja
va:1408)
        at net.sf.l2j.gameserver.ai.L2AttackableAI.onEvtThink(L2AttackableAI.jav
a:1428)
        at net.sf.l2j.gameserver.ai.L2CharacterAI.onEvtArrived(L2CharacterAI.jav
a:712)
        at net.sf.l2j.gameserver.ai.AbstractAI.notifyEvent(AbstractAI.java:402)
        at net.sf.l2j.gameserver.ai.AbstractAI.notifyEvent(AbstractAI.java:331)
        at net.sf.l2j.gameserver.GameTimeController$MovingObjectArrived.run(Game
TimeController.java:251)
        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)