AS part of my quest, I had to go into Charred Tower, defeat boss and minion, and free the Imprisoned Guards. I soloed and killed the boss and minion, Yazarek Dream Prowler, and one Night Weaver, but then when it told me to free the imprisoned Guards, it wouldn't let me.
Re: BUg doing questin Charred Tower in Zultun Dock
I have confirmed that you were inexplicably blocked on that quest, and advanced the quest for you. Your character has had the quest "Lemon Scented" completed, and the next mainline quest "I Live For That Look" has been added to your Quest Journal.