The central has been upgraded, display shows "Version 1.10-rc1 (build 23)" The central is plugged into a linksys usb100tx and then plugged into a linksys 4 port hub. I have a "true" rio receiver and a dell rebadged receiver also plugged into the hub. I cannot get either one to see the central. The hub lights up for all 3 ports. I have set the central to the automatic configuration and clicked the box "serve receiver units", any ideas?