Hi Team,
I had faced this issue recently prior to todays update and whilst updating my airport this morning it crashed again.
If you're editing a polygon and the sim crashes during that edit, it appears that the file becomes corrupt after that and the sim will no longer display any polygons in the scenery editor. I have no idea how to recover it.
Thankfully I have several backups of our project so I only lost the work from today, however. If we didn't have the backup it could potentially mean that hundreds of polygons have to be redone.
CTD Occurs at total random, however it looks that it can be fast tracked if you save twice whilst editing a polygon.