We're setting up a new printer server and adding our network printers. This particular printer doesn't want to be added. When I begin the Network Printer Installation Wizard, I choose TCP/IP and then enter the IP address of the printer. The wizard then tries to detect the printer and fails to do so. I can ping the printer and I can access it via browser, both from the new printer server. It's still set up on the old printer server and users can still print to it. What could be stopping the installation wizard from detecting the printer?