I set up a new Ubuntu 16.04 LTS server VM and set up a multi-site installation of WordPress 4.8 and X Theme 5.1.0. All updates have been installed. It’s a server on my internal network with the private IP address 192.168.1.133. The purpose of which is to learn X Theme and create a new WordPress site. I have activated X Theme with the license from my “staging” IP address.
While X Theme seems to work fine, when I go to add a new page, click on the “Cornerstone” tab to create the page with Cornerstone, and press “Edit with Cornerstone”, it brings me to the white X Theme design page with the Cornerstone logo flipping forever.

FYI - I’m using the X Child theme, but the same thing happens if I use the default X Theme. And I’m starting from scratch, so I don’t have any real customization of my theme.
I’ve seen other posts about this, and I’ve tried the following (and rebooted the server after each significant change):
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Deleted all plug-ins
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Tried various settings for Permalinks.
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Tried Chrome and Firefox.
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Cleared every aspect of my browser history in both browsers.
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Some users have compatibility issues with Jetpack, but I do not have it installed.
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Added the following to the
wp-config.phpfile and restarted the server:define( ‘WP_MEMORY_LIMIT’, ‘256M’ );
define( ‘WP_MAX_MEMORY_LIMIT’, ‘512M’ ); -
One post stated that I should extract the contents of the file
cornerstone.zipto the folderwp-content/themes/x/framework/plugins. When I looked in that folder, I saw that the zip file hadn’t been extracted to thecornerstonefolder. I extracted it, but this also failed to solve the problem. -
Confirmed PHP version 7.0.18.
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Confirmed MySQL version 5.7.18.
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Confirmed Apache version 2.4.18
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Deleted the folder
wp-content/themes/x/framework/plugins/cornerstoneand deleted Cornerstone from my plug-ins. When I went back to the X Dashboard, it said it had successfully installed Cornerstone. I verified that thecornerstonefolder had been created along with the files within it. I verified that the Cornerstone plug-in was activated. -
Confirmed no global CSS or JS.
In addition, I’ve tried the following:
- Deleted all pages in my website.
- Deleted all themes except for the default ones installed with WordPress, X Theme, and X Child Theme.
I don’t see anything wrong with my .htaccess file, but I’ll list it here since it’s an item referenced in many posts:
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]
</IfModule>
# END WordPress
I installed and activated X Theme on my live site hosted on SiteGround and it’s working just fine there.
I don’t know if it helps you, but the URL it tries to open is in the format https://192.168.1.133/x/#/content/102/ (with a different page number each time).
Unfortunately, giving you the username and password to my local VM won’t help because it can not be accessed from the Internet. However, I have 35 years of software development experience, so I can certainly follow any instructions you give me.