This problem was reported at Macfixit today.
QUOTE
While we have not received too many troubleshooting reports regarding Mac OS X 10.2.7 - currently shipping on the Power Macintosh G5 and other newer models - MacFixIt reader Leslie Weinberg notes a potential conflict with the NikonView digital camera software:
"When a Nikon Coolpix camera is attached to the computer, and NikonView automatically beings lunaching, it will not bring up the transfer window, and when you bring that up manually, the transfer button is grayed out. [...] In addition, Image Capture, programmed to open when a scanner button is pushed, no longer opens - NikonView comes up instead, just as it does for the camera.
Same situation...unless you are Leslie....