Airport utility doesn't show the correct information
Hi - I am trying to get Airport Utility to work on my iMac (3.4 GHz Intel core i7, OS 10.8.4) but it does not show the correct information about my network. On my iMac, the utility consistently shows my Airport extreme and three Airport express as "Device Not Found". Yet the data suggests that is not correct: 1) Airport Utility on my older Macbook Pro shows all that all the devices are running fine; 2) Airport Utility on my iPhone shows that all the devices are working; 3) all the airport devices are showing green lights; 4) the wifi internet on my iMac works fine through my Airport Extreme; and 5) my music utility, Airfoil, routinely connects to all my airport express devices without a problem.
The only problem then is the Airport Utility on my iMac. How do I fix it?
iMac, Mac OS X (10.7.1), 3.4 GHz Intel Core i7