error handling client message [C] 04 Action
java.lang.IndexOutOfBoundsException: index: -1
        at javolution.util.FastList.get(FastList.java:178)
        at net.sf.l2j.gameserver.model.L2NpcInstance.getCastle(L2NpcInstance.java:583)
        at net.sf.l2j.gameserver.model.L2NpcInstance.onActionShift(L2NpcInstance.java:526)
        at net.sf.l2j.gameserver.clientpackets.Action.runImpl(Action.java:96)
        at net.sf.l2j.gameserver.clientpackets.ClientBasePacket.run(ClientBasePacket.java:56)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
        at java.util.concurrent.FutureTask.run(FutureTask.java:123)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:65)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:168)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)