Still no luck unpacking the rar. Here's a Dropbox link with the rar file I downloaded. Maybe it's getting corrupted on my end when it's downloaded. Are you able to open this with no issues on your end? I've made a screenshot for you of the error. As a suggestion, can you drop the game files here (not compressed with rar) so I can run the game. As you can see, I'm already planning to add this game to my Steam library as I've already customized a game cover specifically for Oak Hill. Yes, I'm quite committed to getting this game up and running. Thanks for your help. :-)
Dropbox: https://www.dropbox.com/sh/sqwxhqwklx65sqv/AADX9JJ9d0BJcyK7e_roLWvaa?dl=0