airport express is not being detected by airport utility 5.6
i updated my airport utility and then I could only control one airport express the other had to be controlled through 5.6 so i downloaded it and installed. I idiotically pushed the reset button on this airport express (thinking it might work if I started over) now it doesn't show up so that I can set it up again. I even hardwired it to my laptop via an ethernet cable. Why is this happening and what can i do to fix it? it has a flashing amber light.
Mac OS X (10.7.4)