Sorry about that. What version of Windows are you running and where in the game did you encounter the error?
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It's working for me on win10, with and without the itch app. It's definitely worked on win7 before because I made the game with a win7 computer. So I'm not really sure what to recommendas far as troubleshooting goes. It's one of my oldest games at this point, so you're not missing too much. I'd recommend Skelemania or Gemygo, which are more recent and better games.