i personnaly don't know why but i'd try to repatch...open patcher and click patch again...if not try to reinstall with a CLEAN flyff Yakuza - Blade101 xYakuza - Strongest Merc Flyff has ever seen
in that case - follow this guide: http://flyforhero.ucoz.com/forum/25-946-1 you can ignore the v12 thing if you want, it doesn't really matter which you have