I realise which set you meant, but I was curious about “Ermos” so headed off to Google Translate which said it’s Portuguese for “Badlands”. The English name of the set is “Wrath of the Wastes”. Anyway, glad to hear we got to the bottom of it.
Anyway, that has me curious why you’re using an Aquila Cuirass in a Whirlwind/Rend build in the first place. That’s not a subject for the Bug Report forum, so I’ll just leave this here for you…
If you have questions, post them there, and they’ll be answered by the friendly Barb community. Good luck.