Just bought and installed an XR500. All network devices are appearing, and WAN was properly set up. However, when I go to Settings I get... nothing. Just a blank red screen. All other menu items work fine, just Settings.
Interestingly, if I look at the R-Apps in System Information I have a play icon next to the Settings R-App, suggesting to me that it may not be running, unfortunately clicking on anything in the R-Apps window does nothing. I also can't see anything in the logs that may indicate an error starting the app.
Updated to the current firmware, no change. Rebooting, no change. Haven't done a factory reset yet, since I can't access settings to do so.