terryklein: The Project is locked. Changes can not be saved. (315).
That's usually the message you get when you open a Quark file that's on a locked volume like a CD or DVD.
Just do a "Save As", and re-name the file.
OR, go in the finder, click on the Quark file, then go in the Finder's menus at the top: File > Get info > unclick "Lock"