Hey Raffy,
Thank you for reaching out. Components failing specifically on a subfolder installation usually points to a URL configuration mismatch rather than a fault with Components themselves, so the steps below are aimed at confirming that.
Step 1: Quick Check
-
Confirm PHP version is 8.1+.
-
Confirm Pro/X and Cornerstone are updated to the latest versions, and please post both version numbers.
Step 2: Troubleshooting
-
Check your two address settings – go to Settings > General and note both the WordPress Address (URL) and the Site Address (URL). The builder derives its internal routing from the Site Address, so if these do not match the path you actually browse the site at, the editor will request the wrong URLs and fail in exactly this way. Please paste both values in your reply, along with the full URL you use to reach the site.
-
Test the REST API directly – open https://your-domain.com/your-subfolder/wp-json/themeco in a browser. A JSON response confirms the routes are reachable at the correct path. A 404, a redirect, or an HTML error page indicates the builder cannot reach its endpoints, which would explain the errors and freezing. Please tell us what you see.
-
Capture the failing request – open the affected page in Cornerstone, press F12, and select the Console and Network tabs before reproducing the error. Please provide the exact error text, and the URL and status code of any failing request. This will show us immediately whether the subfolder path is being dropped or duplicated.
-
Re-save your permalinks – go to Settings > Permalinks and click Save Changes without altering anything. This flushes the rewrite rules, which can be left stale on a subfolder install after a move.
Step 3: If the issue persists
Please provide your System Info (WP Admin > Cornerstone > System Info) together with the console and network output. If the site sits behind a reverse proxy or is served from a subfolder of a different domain, please mention that, as it changes the diagnosis.
We would be happy to double check your site if we can log in. You can create a secure note in your next reply with the following info:
– Link to your site
– WP login URL
– WP username
– WP password
– WP Administrator Role
– Confirmation that we can access and make changes to your site
To know how to create a secure note, please check this out: How The Forum Works

Best Regards.