I am using the latest version of FCP on an intel Mac Desktop. Despite rendering and saving before closing a Project, the next time I open it much of the content requires re-rendering. I don't recall having this problem with FCP 5 and earlier versions. The only thing I know I am doing different is using the "smooth cam" filter for some clips, but I have been rendering these and saving before closing the Project. Any suggestions please before I go around the bend! Ian Tucker