I tried reinstalling Quicktime, trashing my preferences, and repairing permissions, but the problem still persists. I think this problem may be different in nature from the communications problems that article is designed to address. When I try to import HD video it fails, but I can capture standard definition video recorded on the same tape without even having to disconnect my camera. I just close the capture window, find a section of tape with standard def video on it, and it captures without a hitch. I may be completely wrong about this, but it seems like Final Cut is just not able to recognize the HD video that has been captured on the tape. If anyone has experienced a similar problem or knows of a solution, help would be greatly appreciated.