Hey! Thanks so much for checking out BIT RAT! The error you're seeing is, usually, related to a missing DirectX 9 runtime, which you can download here: https://www.microsoft.com/en-us/download/details.aspx?id=34429. This issue crops up sometimes with Gamemaker: Studio 1.4 games and is usually resolved by installing the above file and restarting the application.
If this doesn't get you up and running, please let us know and we'll troubleshoot from there!
Thanks again!
bryan/[bucket drum games]