error reading npc drops
java.lang.NullPointerException
        at net.sf.l2j.gameserver.NpcTable.RestoreNpcData(NpcTable.java:146)
        at net.sf.l2j.gameserver.NpcTable.<init>(NpcTable.java:65)
        at net.sf.l2j.gameserver.NpcTable.getInstance(NpcTable.java:56)
        at net.sf.l2j.gameserver.GameServer.<init>(GameServer.java:274)
        at net.sf.l2j.Server.main(Server.java:70)