Old saves of course, unless you have the EXACT same set-up as before, will not load. However, there is also the diff between UPlay and UConnect launchers, as well as UConnect not being backwards compatible with Windows 7 or earlier... There have been a number of Ubisoft "updates" of late that have almost trashed the game to where I cannot play it at all except on one computer - and I do not understand what the differences are between two of my computers that it will NOT play properly on the other... Perhaps it is the "online" and "offline" settings? But I do not remember how to do that... except it is in the UConnect settings somewhere... Perhaps the THEBERBSTER's tuts
SH5 <> TUTORIALS <>HOW TO DO IT <> INFORMATION... can help?? I couldn't find it right away, and it might be buried in one of the TWoS tuts...