15:41:34 TimerThread stop with following error. restart it.
java.lang.IllegalStateException
        at net.sf.l2j.util.L2ObjectHashSet.remove(L2ObjectHashSet.java:223)
        at net.sf.l2j.gameserver.model.L2WorldRegion.removeVisibleObject(L2World
Region.java:78)
        at net.sf.l2j.gameserver.model.L2Object.updateCurrentWorldRegion(L2Objec
t.java:480)
        at net.sf.l2j.gameserver.model.L2Object.setXYZ(L2Object.java:153)
        at net.sf.l2j.gameserver.model.L2Character.updatePosition(L2Character.ja
va:877)
        at net.sf.l2j.gameserver.GameTimeController.moveObjects(GameTimeControll
er.java:136)
        at net.sf.l2j.gameserver.GameTimeController$TimerThread.run(GameTimeCont
roller.java:182)
15:41:35 TimerThread stop with following error. restart it.
java.lang.IllegalStateException
        at net.sf.l2j.util.L2ObjectHashSet.remove(L2ObjectHashSet.java:223)
        at net.sf.l2j.gameserver.model.L2WorldRegion.removeVisibleObject(L2World
Region.java:78)
        at net.sf.l2j.gameserver.model.L2Object.updateCurrentWorldRegion(L2Objec
t.java:480)
        at net.sf.l2j.gameserver.model.L2Object.setXYZ(L2Object.java:153)
        at net.sf.l2j.gameserver.model.L2Character.updatePosition(L2Character.ja
va:877)
        at net.sf.l2j.gameserver.GameTimeController.moveObjects(GameTimeControll
er.java:136)
        at net.sf.l2j.gameserver.GameTimeController$TimerThread.run(GameTimeCont
roller.java:182)