@Caligula Hmm, there have been some weirdness in those saves/games I have. Could it have some kind of effect on game if newer version is extracted/copied to same folder in which is older version of game already is,
@Faerin? Some files not replaced by newer ones and thus explaining that weird leak/timetravel of information from newer saves/games to older ones? And some other weirdness too.
Overwriting the previous folder shouldn't be a problem as the file structure stays the same. However loading older savegames into this game gives some problems with the achievements, as explained before.
About the "timetravel" there were some bugs with time not updating correctly and apparently with some days being "stuck", haven't been able to reproduce that yet.
Safest bet for now IMO is just continuing from the included savegame.
The 5.6 build has a 100% save game folder. What is the reasoning about having that? Just having a save folder and having your saves go in that might make more sense.
That folder contains a 100% savegame (hence the name)

You can copy it to your savegame location to start with 100% (from previous version), so you can continue where last update left off.
(Savegame location is the standard "persistant data folder", as I do not have permission to just "write" data anywhere).
I get the feeling that i can't get the call from Veronica on the weekend because of a bug.
Does the call come between 00:00 and 5am?
Actually, yes, the triggeris for you to be asleep at 3:00, on the same day that you spied on Veronica in her room.
This should work any day.