A quick way to fix this problem is to log into a different character on the account and then log back into the character that had this error. This is, given you have another character. Since the servers still free to play, I would fix it this way until they change it. I would have the extra character taken off continuous.
Keki Mithra (75whm, 55mnk, 28drk, 28war, 17nin (getting to 75), 21smn, 40blm, rdm 15, pld 12)
Garnet 10thf Female Hume (mule)