Your latest Mac demo upload is working! Old saves from previous versions are not working, turning on lighthouse mode appears to be slightly bugged, but everything else seems to function properly!
62 days ago(+1)
So there's progress!
The saves from the demo should be compatible with the full version, but It's not supposed to go the other way around, as the script simply isn't there.
How buggy is the lighthouse?
That screenshot looks okay to me. That's what that display should look like at the start og the game.