We've found the cause of this issue and should have a fix up very soon. Thanks for the reports and detailed information!
That's good. In that case, I won't send in my report.zip (admittedly, in part because I couldn't attach a 12 MB file).
Hey, as I'm typing this an update is downloading!
EDIT: It worked. I can now properly load both normal and quicksaves! Thanks, Larian!
