Thanks for this. I do think my problem is thus: before I copied the movies folder onto the lacie external I renamed my hard drive (because a friend who had been messing with my keyboard inadvertently renamed the hard drive on the desktop something nonsensical, “eithrkd”). And so for half of those mov clips, it is searching for a directory called “eithrkd” which does not exist anymore.
Can I somehow point these offline clips to the exact same clip, now in a different location (on the lacie as opposed to my Imac harddrive)? I’ve tried reveal in finder, to rename but it won’t give me that option. Or is there a way I can “change the directory” so to speak?