I'd like to chime in that I'm having the issue with saves not working.
I have the windows version downloaded from here, but if I load to a save that is anywhere other than the bedroom, it will bring up the characters and scene I was in, but no dialog appears and nothing I do can progress anything.
I was hoping to see if some of the graphical errors from the old final version had been corrected in Lex's storyline, but it's getting problematic that I essentially have to restart the whole thing every time I screw up a dialog choice.