java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$ValueIterator.next(Unknown Source)
at net.sf.l2j.gameserver.model.L2Attackable.calculateRewards(L2Attackable.java:388)
at net.sf.l2j.gameserver.model.L2Attackable.doDie(L2Attackable.java:329)
at net.sf.l2j.gameserver.model.L2Character.reduceCurrentHp(L2Character.java:2619)
at net.sf.l2j.gameserver.model.L2Attackable.reduceCurrentHp(L2Attackable.java:308)
at net.sf.l2j.gameserver.model.L2Attackable.reduceCurrentHp(L2Attackable.java:277)
at net.sf.l2j.gameserver.handler.skillhandlers.Pdam.useSkill(Pdam.java:82)
at net.sf.l2j.gameserver.model.L2Character.callSkill(L2Character.java:4573)
at net.sf.l2j.gameserver.model.L2Character.onMagicUseTimer(L2Character.java:4416)
at net.sf.l2j.gameserver.model.L2Character$MagicUseTask.run(L2Character.java:302)
at java.util.concurrent.Executors$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)