I have encountered a vexing problem trying to get my Nikon 4000 ED scanner to work with my new mac pro. I installed both Nikon Scan and Silverfast and every time I eject the film strip, the program freezes and I have to "force quit" to close it. I have uninstalled and reinstalled both programs in the hope that this would fix the problem. No luck. I'm running OS X 10.4.10. I've contacted technical support at Nikon and Silverfast and so far the only suggestions I've gotten have been to uninstall and reinstall the software. I also contacted Apple Support and the technician went through the troubleshooting sequence and concluded that the problem was not with my Mac Pro or operating system. I'd love to hear from anyone who can solve this. Failing that, I'd like to know if others have been able to get a Nikon 4000 ED to work with Silverfast or Nikon Scan and OS X 10.4.10. If others have gotten their scanners connected successfully, it would tell me that the problem is in my system not in the software. Thanks.