Yes, but we do not have any support to
transaction save files. I personally have
a hard time when I need someone reporting
a bug to upload their savegames (and that
happens only when the file is already a
"bad file", anyway).
People could try to get 100% completion
savegames or have someone hack it; Both
can be done more smartly by using the
cheat menu or cheat level editor (it ought
yo be more documented than savefiles,
even), and are not something we encourage.
But then we have Murphy Law. If someone
can do something the right way, OR by the
wrong way, someone WILL do it the wrong
I would not call this critical (and my
initial proposal for a quick patch would
be a banner informing to never load a
savegame from internet).
We also have that updating to fix this
would change savefiles compatibility, so I
think unlikely to a proper, real fix being
deployed for 1.0 or anytime soon. But I'm
not a coder.