AirPort Utility won't recognise AirPort Extreme base station
AirPort Utility 6.3.5 (on an iMac running Yosemite) says "No configured base stations have been found...." even though it also says internet is connected and gives the correct info about my connection. Of course, the only way it could see the internet is via the AirPort Extreme base station.
The network connection is working fine for all sorts of other programs, including Mail, Safari, Screen Sharing, Finder file transfers, and ChronoSync (backup).
With the iOS AirPort Utility, the base station pops up almost instantly. The iOS devices and the Mac are on the same network.
I can't find any way to search/browse manually for the base station, or to just give Utility the address. How do your force it to behave? (Or give it a hand?)
iMac (21.5-inch Mid 2011), OS X Yosemite (10.10.3)