The error only seems to happen for myself on 'Replying' to postBodys, sending works fine. Now, if just reply leaving the postBody subject intact then you will get that 'Could not enter data into the database' postBody. However try deleting the subject on your reply and putting in a new one. You should, like myself find this to be a workable solution.
It works folks! And if you don't use any smilies, I think it works even better. Go on and try it then. It works for me.