> why not just use Remove All Unused Media and be done with it?
Because I have lots of media files in the 'Project Media' window that I haven't used yet but I may need to use. If I remove unused media, I'll need to drag-n-drop all my unused AVI's back into the Project Media window again.
The missing files in question were just JPG stills that I had on my desktop and dropped to the timeline for a test early in the project. The JPG's have since been removed from the timeline and deleted from my desktop.
Anyway - I just found that if I removed the missing JPG's from the Project Media window the problem goes away. It just seems that 'Ignore Missing Files and Leave Offline' probably should have done that for me.