Pandaria Can't abandon quest

[ZooWee]

One of the battle pet quests - On The Mend - has bugged out for me. I completed the quest, and it shows as complete, but I can't turn it in to the NPC nor can I abandon it (the abandon button is greyed out).
The quest itself is not really important but it's kind of annoying to have it forever stuck in my quest log.
I already tried disabling addons and deleting game cache. Anyone had encountered something like this?

[skullatbash]

http://forum.warmane.com/showthread....=1#post2667245