I am using a JVC GR-DVX2 and I upgraded to QT 5, running a German OS 9.1. I am using Premiere 5.1c. Now, with QT4 I could not play edited material back to the camera, then I read a recommendation that the preview of QT 5 would solve the problem, which it did. QT 5 preview expired on a regular basis and so I downloaded QT 5. The result is that I returned to the status that I had with QT 4, Premiere wont let me play back edited material to the camera. There is no signal coming through. Premiere activates the camera, but nothing more. iMovie works just fine. Has anyone expereinced a similiar problem and/or knows of a work-around?