Forget network keeps coming up
I have a time capsule connected to my cable modem. I have an AirPort extreme connected to the same network. I made a setting change on my airport extreme in the airport utility to extend my network. Now the AirPort extreme has an error telling me the device is not found and I should forget it. How do I get back into the airport to fix the settings?
Airport Extreme-OTHER, Mac OS X (10.7.4)