Hey by the .png pic you attached, I think your looking in wrong folder of your registry... try looking in the "HKEY_USER" folder, you'll find the folder with a long number. Such as: "S-1-5-21-2116563865-1618579858-2431947789-1001" in mine.
Copy that entire number to replace the one found in the 'key.reg' (that was extracted from the zip you downloaded) I used notepad. Then save the key.reg file, and click on it to add the save data to your own registry. You be prompted to add it to your own registry. It worked fine for me, you'll see 3 new saves in your game. Hope this helps.