So, FSX crashes when minimised and I know this is usually an issue with it being in fullscreen, but this time it was windowed. It keeps doing this and, since, for reasons I'm really not interested in explaining, I can only have one monitor. This is an issue because of littlenavmap. I need to see it. So, I'm going to try verifying the game files and seeing if that works. if it doesn't, I'll reinstall. If that doesn't work then I'm screwed. I did see one post with someone who had the same problem and they deleted an fsx.cfg file but I can't find this anywhere.