After a long absence from flight sim, a new PC build gave me the bug again, so I fired up P3Dv4 and X-Plane 11, installed my scenery and airplanes, and set to my navigation programs, one of which the latest version of Plan-G. Set up the X-Plane Database and tried the P3Dv4 database, only to get it hang with the message "Failed to build database (Object reference not set to an instance of an object) See log for more details. When I look at the log, it looks like every thing was ok until it started writing airports.