I cannot complete the quest 'Mark of the Dragon', bestowed by Lockania in the Marketplace. Each time I attempt the quest Lockania asks a series of questions, I answer them, she says I have demonstrated my knowledge of dragonmarks, a message flashes that I have unlocked dragonmarks on the server, and then the quest stalls. The quest does not advance to 'Completed' in my quest log. When I go outside and speak with Lockania, she tells me to go back inside and do what I just did. On the Marketplace map, the entrance to her shop continues to flash, after having 'demonstrated my knowledge'. I cannot abandon the quest. Logging and rebooting do not solve the problem. I have tried at least a dozen times with two different accounts and this quest will not 'Complete'. It is, essentially, an endless loop. A forum search revealed a fair number of posts concerning the same problem, but I cannot find a solution. Is this quest broken?