Some people have been reporting save files breaking - I've looked into it and think I have a robust solution. If save game files still break, please do let me know.
Here are the patch notes :
1.016
Revamped saving, so that it should be very robust now.
Revamped backups - 15 slots per profile will be stored now.
Fixed a bug with collectables being re-collected over and over when reloading levels
Made shelves with objects on top non-parkourable
Moved input bindings from system prefs into player prefs.
Made Suppress Popup Help available from new game - if you enable this and don’t know what you’re doing, don’t come complaining to me!
Opened a window or two for speed runners.