Need help connecting Airport Express extenders to home network
I just got a new Airport Extreme base station to replace a 4 year old Extreme. I also have two Airport Express extenders. My old base station and my two extenders have been working -- I bought the new Airport Extreme because I stopped getting wifi in one part of the house a few weeks ago (despite the two extenders) and thought a newer model base station could help fix that. I also was hoping to use my old Extreme base station as an additional extender (giving me a total of 3 extenders). I have my new base station up and running. However, I am unable to add the two Airport Expresses to my network. My Airport Utility shows the two Airport Express as "New AirPort Base Stations," but when I try to click on one to add it, I get the following error message: "An unexpected error occurred. Try again." It also is not giving me a way to use the Expresses to extend the network--just listing them as additional base stations. Anyone have any suggestions? Thanks!
Airport Extreme 802.11ac, OS X Mountain Lion (10.8.5)