I replayed it from the Falrog. It worked this time, it seems that it's necessary to be wearing the Breastplate when fighting the bugs so that it works. And you're right, it should become the Larian Armor after killing the bugs! so I'm glad it worked, it's better than my Mithril Plate...
1 more question: Could it be that Cure quest for the 3 plague victims has not right solution except for pickpocketing 1 of the victims after giving them the potion. i did that and it worked, but why wouldn't they make u choose 2 out of 3 ppl?
