Hey Doctor Flare
I believe this error is due to a missing / corrupted DirectX installation.
Please try re-installing DirectX from this location;
https://www.microsoft.com/en-us/Download/confirmation.aspx?id=35
If this does not resolve the issue and allow you to play the game, you can also try this DirectX Dependency Fixer;
https://obsproject.com/forum/resources/directx-dependency-fixer-dxfix.87/
If neither of these work for you, please let me know and i'll be happy to refund the purchase!
Cheers,