@randy.guenthner, sometimes the adapter drivers go south and require a restart to get working again.
Is the Edimax adapter showing in the inSSIDer status bar with [packets] next to it? If yes, but no packets are actually showing up. If not, please check that you are running as admin. If you are admin and the adapter isn’t showing up sometimes just unplugging and replugging the adapter is enough to get it working again.