As we can see there is a lot of people that changes save file headline with game version.
DO NOT! BLOCKED SAVE STATES AREN'T A BUG!
We are changing game version and block older save states intentionally. Game core is still under development what affects save file structure.
When save file is edited and you are loading outdated state you can expect one thing - BUGS! A lot of them. Game will receive tons of nulls what will result with:
- a few pages in one location
- a few items equipped at the time after load
- crazy slendy (frozen in one place or haunting you a few times per second ;] )
- some triggers may not working, or they will work when shouldn't (if used earlier for example)
- aaand so on...
So, please - don't edit your save files. When game is updated - delete outdated save states and start new game. Game isn't so long anyway ;)