I noticed a number of times today that when I click the submit or post thread button after performing a preview that I would get an error and my reply would not post. It happened when I updated my User CP (signature) and when editing a post for reply. I've been posting on the Theme Parks, Budget, Wish, Universal, Sea World and Community Boards today since chaning the the Serenity Green skin. I don't know if it is exclusive to the skin or a general board problem. I don't think I had an issue using the Happy Holidays skin which I had been using prior to today.