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Hmm. This appears to be something specific w/ the file on itch.io. When I try the zip that I uploaded it runs fine, but when I download the zip from itch.io and try it gets that problem you describe. This is very unusual, but I'll see if I can sort it out for you. 

Have you tried running it from windows explorer?
Windows 10 will block unsigned executables that are downloaded from the internet. From command line it does nothing, but from windows explorer it will give you a prompt (which if you ask for more info will have a Run anyway).