Bonjour,
1. Since the last version when a volume with a scnenery is not present P3DV4 doesn't start and get stucked on the splash screen. Before in the previous version there was an alert saying the scenery could not be installed.
2. With each new version of P3D it is more and more difficult to load situation by double clicking the fxml file. It generate a lot of problems in the different addons. I used to have this problem with PMDG and now with the last version it occurs with the Realair Lancair, and GTN750.
Cheers
Claude