A command prompt? Is this a DOS game?
No, it's a graphical game for the desktop, but if you start it from a command prompt, you'll be able to see if it complains about something in particular, because that's where error messages normally go.
I already uninstalled it since it didn't work.
Sorry to hear that. I'd offer a refund, but you have to e-mail support for that.
Don't worry about a refund. It was a gift from a friend.
I later discovered you can right-click on the executable file and set the Compatibility tab to "Windows XP" for it to work correctly.