Yes, after the conversation. Obtaining the Castle next to the monk Ossillion – if you don't have the Knight Benabar – won't lead to 'this message'. The path to the second Castle is very tricky – through a whirlpool.
P.S. To the author – it wouldn't hurt to also debug the scripts, but that's up to chance.
Is something not working correctly?
Perhaps someone will be interested, I'm posting 2 saves – one when the gates open and the first Barbarian is visible, the second – the last day before the final battle.
http://narod.ru/disk/39250566001/save_19.sav.html
http://narod.ru/disk/39250557001/save_17.sav.html