Dale B, you're refering to the mail I got from CL and posted here a few days ago, right? ;) (Quote) ---------------------------------------------------------- Yes the engineers have found a bug that could be the cause of the problem. It will be in the first service release which will be out shortly. For know what I can suggest is two things. First, save out in revisions, ie save out to a different file name each time. Second you can add the entire scene as a prop to you library pallete. That way if the file does get over written you can just load it out of the libary pallete. ----------------------------------------------------------