I know I have next to no chance of fixing this, but I was editing the last episode of a podcast series, and the session crashed. When I tried to reopen it, all edits have disappeared. Like, even renaming tracks, everything. I tried opening backups, earlier versions ... every single one is now an empty multitrack session. Many hours of work gone. Couldn't be more puzzled ... or upset.
When you say 'empty multitrack session', do you mean that everything's there, but just greyed out? And how have you got your backups set?