[help]Не загружаеться гейм сервер

VanHalterManager: Loaded 30 Royal Guard spawn locations.
VanHalterManager: Loaded 11 Triol's Revelation spawn locations.
VanHalterManager: Loaded 1 Royal Guard Captain spawn locations.
VanHalterManager: Loaded 1 Royal Guard Helper spawn locations.
VanHalterManager: Loaded 4 Guard Of Altar spawn locations.
VanHalterManager: Loaded High Priestess van Halter spawn locations.
VanHalterManager: Loaded Ritual Offering spawn locations.
VanHalterManager: Loaded Ritual Sacrifice spawn locations.
VanHalterManager : State of High Priestess van Halter is 0.
Exception in thread "main" java.lang.ClassCastException: net.sf.l2j.gameserver.m
odel.actor.instance.L2RaidBossInstance cannot be cast to net.sf.l2j.gameserver.m
odel.actor.instance.L2GrandBossInstance
at net.sf.l2j.gameserver.instancemanager.VanHalterManager.spawnVanHalter
(VanHalterManager.java:666)
at net.sf.l2j.gameserver.instancemanager.VanHalterManager.setupAlter(Van
HalterManager.java:1267)
at net.sf.l2j.gameserver.instancemanager.VanHalterManager.init(VanHalter
Manager.java:224)
at net.sf.l2j.gameserver.GameServer.<init>(GameServer.java:398)
at net.sf.l2j.gameserver.GameServer.main(GameServer.java:708)