Upgrading to Newspaper X from Newspaper 9

Hello,

I was working on updating our existing Newspaper9 theme to Newspaper X by following the instructions at https://forum.tagdiv.com/install-via-wordpress/ . I was sure to unzip the file with documentation and upload only the Newspaper.zip file that was 1.2 mb inside of the larger folder. However, every time I attempted to upload it, it said that the style.css file had an invalid Theme header. I manually unzipped that folder to look and saw the following in the style.css file, though everything looks right from what I can see:

/*
Theme Name: Newspaper
Theme URI: http://tagdiv.com
Description: Premium WordPress template, clean and easy to use.
Version: 10.3.6.1
Author: tagDiv
Author URI: http://themeforest.net/user/tagDiv/portfolio
License:
License URI:
Text Domain: newspaper
Tags:black, white, one-column, two-columns, fixed-layout
…Table of contents, etc.
*/

Is there anything else necessary to enable to theme to upload properly? I completely deleted the existing Newspaper 9 installation to make sure they weren’t both writing to a /Newspaper folder, but that didn’t help either.

Thanks for any help you can provide.