Just to recap,

1. Make sure you have the latest version of Integral Lite download (v1.0.6). Make sure you UNZIP that file, because the theme files are located inside.

2. Follow these instructions, http://support.themely.com/knowledgebase/how-to-update-your-theme/. If that doesn’t work you can also upload the theme files via FTP. It will simply overwrite the existing files.

3. Then you can install the Integral Child theme.

If you try this and you still have an issue, add me as an admin user in your Admin Panel and have it send me my login credentials. That way I can log in and find out what the issue is.