Hello Everyone, I'm using microwave analyzer N9937A 18GHz. I have upgraded its firmware version to A. 11.55 on last week. It's running well after my upgrade and after few days it's showing an alert box with message "Wait for PlatformD failed.". Even i press on everything but nothing change had came. Also I cannot connect it via LAN cable and nothing can be done. Did anyone had been faced this issue or any suggestion for me ? Thanks all in advance.