I will try buying and downloading the game again. Apparently, the first time I bought it, it was only 64 bit compatible but didn't say so. I have a 32 bit OS.
Update: I've talked to the developer and he's released a 32 bit version now. I've gotten that from redownloading the game via email. Thanks for fixing this! Now, please do the same for every other game on here. Not everyone has a 64 bit Windows OS.