I have the retail copy of GTA IV, and I can't seem to get the new patch to install. Even after clicking on the exe a billion times, after it finishes the update, the Details tab in Properties of GTAIV.exe still shows 18.104.22.168. Besides, I still have the play offline button which was supposed to be removed.
I have Win 10 Home and 8 gigs of ram, that should be enough.
The game doesn't start at all, as after I click on 'Play Offline', nothing happens.