Running an iMac running 10.5.8. Downloading video from a Panasonic SDR-H80P-K. It completes the task, but all clips are blank. Each clip shows the clip's length and the file is 3 gigs big so it downloaded. Why won't iMovie see the colored clips? I have downloaded the camera into another iMac with the same OS and iMovie 09 (8.0.4) and it worked perfectly. Any ideas?