Every so often, this stage will glitch and the NPC will constantly say make sure the items are in front of the vessels. This is so frustrating. I have to pickup all the items and replace them multiple times for this issue to clear.
When this happens, have you made sure to loot all mesos on the ground from the monsters too? Have one person dedicated to killing the mobs and another person dedicated to looting all the mesos- have everyone else stand off to the side. Sometimes they will fall behind the pillars and such too.
I know, I have everyone stay on one far top corner of the map while 1 person comes and kills every time I fail. But it still glitched. Perhaps pets are what glitch it though. Unfortunately I knew I'd have risk of D/C if I tried removing my pet, but I felt I couldn't pass if I didn't. (now that I think about it, I could've dequiped the loot item equip) And my pet ended up D/C'ing me thus failing the run. Next time I'll try no pet and hopefully it won't glitch at all.
Did you make sure to manually loot the mesos though? I'll try to do some test runs with my guild but I don't remember us havin this issue as long as we picked up the mesos.
Are you making sure that you only drop 1 item in front of each statue, not a stack of 2 or more of the item?
I'm not going to test this further but the stage works perfectly when I don't have my pet out.. does the client communicate with the server when the pet tried looting an item you just dropped? If so, maybe the item state changes after the pet tried looting it... Otherwise, I guess it was a random error. Or something else to do with the pet. (Yes I looted all items etc, only dropped 1 of each item)
Oh, I think I misread somewhere- Try to make sure everyone in your group has pet loot off. I don't know if it changes anything but we've always manually looted the drops to avoid any potential issues with pets looting (or to prevent other peoples pets looting it while they're afk, or don't know how to do the stage, etc.)