Thanks for testing that. Are you running 32-bit? I think my Unity and IL2CPP setup doesn't support that, unfortunately.
Which Windows 7 Service Pack version are you running?
Did it put any .log files in %appdata%\..\LocalLow\Kobold's Keep\SeptSide ?
I have added a 0.3_Compatibility version, which should work with Windows 7. Could you give it a try and let me know if it works?