Love of Magic savegames are platform neutral. You can copy them to and from PC, Mac, Linux and even Android.

Here’s the save-paths for the various platforms:

PC:
%USERPROFILE%/AppData/LocalLow/Droid Productions/Love of Magic

OSX:
~/Library/Application Support/Droid Productions/Love of Magic

Linux:
$XDG_CONFIG_HOME/unity3d/Droid Productions/Love of Magic

( %USERPROFILE% ) is a windows shortcut; you can replace it with c:\Users\[YOUR_USERNAME]

If you’re reporting a bug, the easiest thing to do is just zip up the whole folder: that gets me log files, quick- and auto-saves as well as the specific file you’re talking about.