I was just about to output a half hour show to tape and noticed a problem with one title. I changed it and when FCP updated the revised title, ALL of the render files for the entire show went off line. Since I had just opened the project, I closed it without saving it and then reopened it. All of the original render files were there but again while revised that one title, all of the render files went off line again. No matter what I do, the files all eventually go offline. Trashing prefs & the usual didn't help. I ended up trashing all of the render files for the project and I'm re-rendering right now. Any ideas on why updating a single title should cause ALL of the render files to go off line? This is a new one.