Hi PS
You can check which game version you have immediately after installing SHIII.
It is also important to remember that the LSH3-2015 zip file should be downloaded into a new folder so it can be installed correctly.
It is also important to check the file byte numbers to make sure there are no missing files or corruptions caused when downloading.
At the moment I think you have missed or possibly over looked a procedure or missed something along the way?
It may be worth while going back over the tutorials to recheck nothing has been missed.
You downloaded the 1 file single download is that correct?
If you cannot resolve this then I suggest that you send me a PM and we will sort it out together as I can respond to PM's quickly.
Peter