Hey Dexter,
Firstly, we answer threads from oldest to newest and self-responding to your thread will push it to the newest queue and therefore prolonging your wait time. Please be patient and wait for our reply as we’ll surely get to you.
Regarding the error you encountered, we don’t get that in any of our test sites so we could not declare this as a bug so there’s nothing to fix yet on our side.
Please login to your server and completely delete the cornerstone folder in your wp-content/plugins folder and reinstall Cornerstone again.
Also, try downgrading and upgrading your PHP version temporarily to see if PHP version has something to do with the error. Your web host can help you with this.
If none of that helps, please give us the following info in a Secure Note.
- WordPress Login URL
- Admin username and password
- cPanel or FTP credentials (if you’re not familiar with this, you can get this from your web host)
You can find the Secure Note button at the bottom of your posts.
Thanks.