Q: Apple airport firmware 7.7.7 broke my extended network

I updated my network routers (Time Capsule connected to internet with an Airport Extreme and Airport Express extenders) to 7.7.7 and 7.6.7 respectively. Once I did, the Airport Express can't be seen by the network on the Airport Utility but shows a green light on the front. I've tried to reset it and set it up after resetting to defaults. Nothing works. At one point it shows the Express in front of the Time Capsule between it and the broadband connection. Help?