Hello, I did what you suggested, I deactivated every plugin that I had installed. Then I deleted the x-child theme and the main x theme. I then reloaded x, then x-child, but I was still unable to create a page or post in Cornerstone. Additionally, the demo info didn't load properly.
So, I deleted all the plugins and did the same, to no avail. At this point I decided to delete the Wordpress website all together and reinstall Wordpress. Afterwards, I re-tried to upload x.zip, but it wouldn't upload, stalling in the middle of the upload. So I wound up importing the x folder directly into /wp-content/themes via FTP. I did the same with the x-child folder.
However, I kept getting error messages indicating the main theme was incomplete. After fiddling with it for quite awhile, I have both x and x-child themes installed, but am still unable to get create posts or pages with Cornerstone. I'm back at square one.
Would you be so kind as to look at this again. I'll have to send you the updated login information on a private message. Thanks, -John