java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedConstructorAccessor26.newInstance(Unknown Source
)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at net.sf.l2j.gameserver.skills.EffectTemplate.getEffect(EffectTemplate.
java:77)
        at net.sf.l2j.gameserver.model.L2Skill.getEffects(L2Skill.java:1115)
        at net.sf.l2j.gameserver.handler.skillhandlers.Pdam.useSkill(Pdam.java:9
4)
        at net.sf.l2j.gameserver.model.L2Character.callSkill(L2Character.java:44
80)
        at net.sf.l2j.gameserver.model.L2Character.onMagicUseTimer(L2Character.j
ava: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)
Caused by: java.lang.NullPointerException
        at net.sf.l2j.gameserver.skills.Formulas.calcSkillSuccess(Formulas.java:
832)
        at net.sf.l2j.gameserver.model.L2Character.startStunning(L2Character.jav
a:1099)
        at net.sf.l2j.gameserver.skills.EffectStun.onStart(EffectStun.java:43)
        at net.sf.l2j.gameserver.model.L2Effect.scheduleEffect(L2Effect.java:285
)
        at net.sf.l2j.gameserver.model.L2Effect.<init>(L2Effect.java:151)
        at net.sf.l2j.gameserver.skills.EffectStun.<init>(EffectStun.java:33)
        ... 17 more