Okay then. Very understandable. I've really tried to fix this problem and have no clue. I also have installed the build on 2 different PC at my home and it runs (installed and played) just fine. Really really sorry for this trouble. I just reply your email and offer to refund your money. We'll continue this conversation there, or continue this chat to my discord : adeptusceleng#9132 (Whichever that makes you comfortable).
-Celeng-