I have a Sony handy cam which connects to my G4 via Firewire. Normally I have no problems copying from the Sony to the Mac. However an issue has just arisen. I have 2 mini DV tapes shot on another digital cam. These tapes play back perfectly OK in my camera, but when I connect the camera to the mac, the tapes refuse to play. I have checked the set up using one of my old tapes which I shot using my camera and everything is as it should be and works fine. Could there be some form of copy protection operating on the tapes? Any thoughts?