Changing save game locations,

[boblech]

# are comments like ' or rem // ect. the line will be ignored

Change this line
sets ~personal_path "%PERSONAL%\My Games\Kings Bounty"

to
example
sets ~personal_path "E:\King's Bounty Crossworlds GotY\save"

Don't forget to write the " at the start and the end of the path.
And you have to create a new save Folder in your new path. (Your WindowsUserAccount must have writing access to this location)