Kogane-Maru
Unfortunately this didn't help my friend. She did the quest over and was still stuck, Barry just didn't really want her to turn the quest in for some reason. The log says it's done and he doesn't let her turn it in. Barry is keeping me from having a pal to zOMG with! D:
My sister had the "stuck" issue, and we resolved it by using another browser and computer. I opened it up on my computer, used Safari rather than Firefox, and completed it. Then I opened it up on her computer with Firefox, and it worked great.
I think this issue is supposed to be resolved in Monday's maintenance as well, so after that you should be okay.