The compressed version on the main post is a compressed version of the original game.
My "patched" version is less a patch and more a complete overhaul.
Given how much I rewrote (very little actual structure changes... more just making sure it worked properly, spelling and grammer, etc) - the two versions are largely incompatible.
The save files I provided only work with my patched version.
You might want to try the compressed version of my patched version. Available here:
https://f95zone.to/threads/sister-sister-sister-virtual-indecency.3705/post-1222663
My save files should work with that.
I made a couple of spelling corrections after that compressed version was created, but I really do mean "a couple". You'd be missing practically nothing compared with the 1.9gig version. Though if you can spare the bandwidth to grab the large version, it might be worth it... but only if you plan to replay the game at some point. It's hardly worth it just to see the various endings.
It's a long time since I touched it... and honestly, I don't remember these days what is needed for the Addison ending.
Though one thing I would say is that the "endings" are more small epilogues than full story endings. The strength of the game is all the storytelling that happens from beginning to the end. The ends themselves are tiny in comparison with all the branching story options that occur depending on the choices you make while playing your own way.