I assume you mean creating the save folder did that still doesn't work! All that was done.Are you able to read a few posts back?
Tried "Save" & "save" for folder names neither worked. Maybe, if the developer took the time to actually create that folder in the right folder then it wouldn't be an issue. But not going to waste more time than that trying to solve something the dev should have put in on his own.
I get he is using RPGM so doesn't have full control over the engine. For me on my games they make the folder if it isn't there.
It just makes sense, the end user shouldn't have to worry about issues like that just play.