Fixed NPE #3905

L2_GameServer/java/net/sf/l2j/gameserver/model/actor/instance/L2CubicInstance.java

@@ -619,6 +619,9 @@ public class L2CubicInstance
 	{
 		for (L2Character target: (L2Character[]) targets)
 		{
+			if (target == null || target.isDead())
+				continue;
+
 			if (skill.isOffensive())
 			{
 				byte shld = Formulas.calcShldUse(activeCubic.getOwner(), target, skill);