java.lang.ClassCastException: net.sf.l2j.gameserver.model.L2MonsterInstance at net.sf.l2j.gameserver.handler.skillhandlers.Disablers.useSkill(Disablers.java:93) at net.sf.l2j.gameserver.model.L2Character.callSkill(L2Character.java:4480) at net.sf.l2j.gameserver.model.L2Character.onMagicUseTimer(L2Character.java:4306) at net.sf.l2j.gameserver.model.L2Character$MagicUseTask.run(L2Character.java:253) at java.util.concurrent.Executors$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)