The latest iMovie 3 did the same thing. My QT is up to date and opens the .mov fine. I use QT for sound synchronization and converting to .mp4. Porcupines are peaceful creatures but God still saw fit to give them quills On Jan 18, 2004, at 18:49, barry ellman wrote: > Just got the new I-movie 4 loaded on my I-book, and noticed that it > automatically created a .mov version of the movie on saving. > > However, this .mov file cannot be opened with older versions of > quicktime. > > Anyone else noticed this? > > later, barry