I really don't know why you guys have this problem. I played the original version from the beginning and as mentioned on OP only Carl-path was working. There were no problems to trigger Sergey's message nor anything else during my fresh new game nor with Deep's provided saves in-game (see save page 5 in-game).
1. Delete your old save (including your saves stored in AppData).
2a. Start a new game and choose Carl-path (because of the bug) or wait for the bugfix.
2b. Load provided save by Deep from save page 5 in-game.
3. 40 corruption points are only available on Jeremy-alive path.
So, basically, wait for bugfix. I like having multiple saves, each with multiple paths. I also like old saves to work with each new update. And, it's ok if every now and then the old saves don't work and we need to start over, but that's happened the majority of updates for me. I MIGHT try again at a bugfix, but depending on my mood at that time, I may just decide to wait til the game is completed, THEN I won't have as big of an issue with starting over and just playing fresh from the beginning, and creating multiple saves for multiple paths, like I like to do.
Of course, I don't have the same issue the others are having. My game won't even start this new update. It doesn't mater where I go or what I click on, I get a "can't do that right now" type message, and nothing else happens. I can't trigger anything.
At least in RPGM you can usually make the MC go to sleep and restart the day to trigger new events. lol