Thanks a lot for letting me know!
I'm not sure what could be causing that... saving and loading both work fine for me. Do you think it's possible that your browser is blocking that functionality? (I'm using Firefox if that helps at all)
The only other thing I can think of is that maybe you accidentally pressed X instead of Z which would exit the menu without saving, but I'm sure that's not the case as I know you've played other RPG Maker games before.
I hope it didn't ruin your experience too much, Beaker! At the very least, saving should work in the downloadable builds.
Thank you for giving the game a try! Sorry if I wasn't much help to ya!