Sun May 26, 2013 9:55 am by Lexoph
Check if you've finished all your daily quests. You might have missed one or already did one veteran/expert map without you fully knowing it was one.
I haven't had a problem yet.
Good luck!
EDIT: I think it might be because they replaced the PvP quest rewards.
Quitted!
"The past is history, the future is a mystery
and today is a gift."
Haypi Monster S11: Lexoph