Hi there. This type of troubleshooting isn't really my forte, but I'll give it a shot.
You mentioned the 32-bit executable file. Have you tried just running the regular, 64-bit version? When you extract the zipped file, you should see three folders, a python file, an SH file, and two exe files: one exe is called PerfectPitch and the other called PerfectPitch-32. Have you tried running any exe besides the 32-bit version? If not, try running PerfectPitch.exe.
If that isn't working, are other ren'py games working for you or is it just this one?
Give those two ideas a try first.