This has happened twice to me today, losing hours of work. I save to a file regurlarly during work, then when closing down Reaper I get blue screen. Next when starting the project again I get this message about error parsing the project. The only thing to do is using a .bak file that's several hours old with all the work lost. Any idea what is going on? Any easy way to get the project started again? ... Windows 10 updated something yesterday.