Is HTML Executable required?
Yes. CHM To Exe is only an add-on for HTML Executable. The free Trial of HTML Executable allows you to test all of the features but puts a nag message in your compiled .exe files. If you want to remove the nag message from your compiled HTML ebooks, just purchase a Personal edition or a higher edition if you want to benefit from advanced features. Note that the Personal edition is adequate for using CHM To Exe.