I do not presently use iPhoto to open and automatically download pictures from my A-620 Canon Powershot. Instead I planned to use the Canon software (on my computer), however is no longer working correctly. Canon's Camera Window that opened on my powerbook, no longer opens on the new MacBook Pro. It did work a few times, but has now stopped. When the camera is connected, the message I see says there is no camera and the program closes. Any clues for me about what is going on?