Good news is I got the save working in the download version, bad news is I'm stuck using the log to get it across the lake. The one spot I can jump puts me in a small spot I can't get out of. There are trees on both side and I can't climb the cliff or even go back across the log. There's probably something I'm missing.
This is absolutely working as intended. After all, it's an rpg, and in most rpgs, you need to look for yourself. Since you do not have much possibilities (you can't go back), the path forward is not too hard to find, I think. And there will be harder puzzles to solve than that :)
Have fun playing :)