The HUD window is competely blank as shown in screen capture image.
I have used Mission Planner for many years and it has been stable on my Windows 10 laptop: and was last OK on 15th May 2019. Using it today (20th June 2019) it is now blank: and I note a microsoft update (version 1803) happened in between. I tried updating to .NET 4.8. Also updated to MP 1.3.68: as well as re-installing.
Any ideas on Cause and Cure ? … many thanks.