Humm.. then it's not loging anything. I'm out of ideas if you've validated the pids and when you press the start button on the BB (you are using the button on the BB to start the log arn't you?) and the light comes on and stay on solid and the mem light should come on and stay on too, it should be loging data. Does the log light go off if you press it again (mem light should stay on cuz there is something in the mem)? Might be a falty cable is the only thing i can think of.