It might be that windows prevent saving because it believes the file to be locked by another program (virus detector or something like that).
Just to make sure that we're talking about the same "save":
If you open the game, make some changes (to the starting map for example) in the editor, then save and close the editor and then open it again - have the changes disappeared?
(don't even try to playtest in this case)
Or does this only happen with the automatic save when trying to playtest? In that case it might be that the save works, but one of the changes in your scripts prevent the playtest from starting or from loading the changed options into the game.
Or do you mean the save option ingame for saving player progress?
It happened when I tried to save it from the File options too, not just the automatic one. The play test would only work if I hit
No when it asked me if I wanted to save changes. if I hit yes nothing would happen and the play test would not start. The same thing would happen if I tried to close the program too. It would only close if I chose
No to save changes. If I hit yes nothing would happen and the program wouldn't close. Pretty weird and I never encountered something like this before.
I wasn't talking about the in-game save options, though that might would be something interesting to test. But I'm a little wary about it. I don't like suddenly having my project files becoming un-savable like that, and it has me anxious about moving my project files around again lol