I am experiencing much pain trying to export to tape with Premier Pro 7.0...I'm using a laptop connected (via firewire) to a Sony DSR-40. When I go to export my film (only 2.5 minutes) it says "Rendering Files" (which takes about 5 minutes) - and then it records black onto the tape (with some bizzare message in my timeline window)...basically it didn't record diddly-squat....help? please