I don't think you can install this application on a Mac because it's not available on the website of the developer. It's said that Customizer 10000 Plus contains 3 more application which makes it a suite, but those applications are also not available for troubleshooting or downloading. You will have to get in touch with the developer to ask him about the possibility of running newer versions on Mac.
Use the following link to reach the Contact page: http://janome.com/en/contact-us/
