Keep in mind that Font Squirell will not subset all fonts. Quite a number of fonts are blacklisted.
Also, John, I take some offense to your words. My program was not intended to work as you would like, it works as I wanted. The fact that I am working on a new version that can open ePUB is because I can see some need for it for myself and some others. Quite frankly I don't care if it works better for you. You never ask for something, you demand.