A question. I have been starting to play the old Myst games on my iMac. I know that these won't run on Catalina now and I don't have Mojave. The question is, why does Riven have no problem opening, being played, and saving where as Exile will open and play but will not save game play? I find this a curiosity. Original Myst is not a problem as it works just fine on all the OSs.