Problem getting the Koitate patch to work

[hydro]

I bought the game off DLsite and installed the game easy enough, no problems starting the game in Japanese. But when I try and apply the patch from here I get this error:

 

 

Here's the folder 

 

 

When I open the application on the bottom it starts the game in Japanese just fine, when I click on "koitate_en.exe" it comes up with the error message from the first picture. I haven't had trouble getting this kind of thing to work in the past, but it has been a while so hopefully I'm just missing something obvious. After extracting the patch .rar file these are the 4 files you get, I just copied them into the same folder I open the game from. I'm not sure if that's the issue or not. 

 

[Sisulizer]

Sadly, but I have to say this, the patch is for the older version of the game. The version you bought is "koitate reboot shield 9", which uses new engine