java.lang.IndexOutOfBoundsException: Index: 1177, Size: 2
        at java.util.ArrayList.RangeCheck(Unknown Source)
        at java.util.ArrayList.remove(Unknown Source)
        at net.sf.l2j.gameserver.model.L2Character.enableSkill(L2Character.java:4394)
        at net.sf.l2j.gameserver.model.L2Character$EnableSkill.run(L2Character.java:278)
        at java.util.concurrent.Executors$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