For some reason, FCP is now refusing to export my project's video to QuickTime. It doesn't throw any error dialogs or anything, but when I click Save, it pauses for a few seconds, then just returns me to FCP as if nothing had happened (no "Saving..." dialog or anything). There's a movie where I said to save it, all right, but the video is blank white, as though I didn't have the codec for it, but there's no "You don't have this codec" dialog or anything like that. Audio still works fine, though.
It was rendering the video in this very project just fine, until last night. Anyone have any idea as to why it would just suddenly stop?