Same for me here. I am currently trying to verify the game files, but it is stuck at 0% while checking the local files and is not progressing at all. Losing my progress up until now is a no go.
EDIT: Okay the verifying of the game files worked after few minutes nothing happening. It didn't fix the missing savegame though.
EDIT2: I got a fix that worked for me. Open the Support for Battletech. (Battletech in library -> more -> View Support)
Go to "other issues" -> "File access-related ...." and then follow the troubleshooting steps. These worked for me and i was able to access my save game.
I have no clue why this is necessary at all though. Why do i need to manually give permission to the specific user account i am using, eventhough the permission for "every user account" is already checked?
Makes no sense to me, but it worked for me. Hopefully this will work for other people as well.
Post edited April 26, 2018 by mybliss