For everyone still having problem extracting the game check
my post, I've included autoextractor in the package so once you download everything just double click and select your extraction path (if the mods don't have changed the pack structure I believe you can only download the autoextractor file, the .exe if you didn't understand, you still need both part downloaded in the same folder in any case), idk why mods didn't add it in the main post directly, and once again the version shared is the 1.5 Deluxe GOG commonly know as 1.04 + Append.