Thanks for writing in! This usually happens if you have updated Cornerstone to the latest plugin and forgot to update the X theme as well. Please make sure that everything is up to date. Could you please update to the latest versions?
Our latest versions are:
- X theme 6.2.5
- Cornerstone 3.2.5
This latest release contains fixes for several issues so be sure to check out the changelog (http://theme.co/changelog/).
_After doing the updates, always remember to clear all caches (if you are using WP Rocket, WP SuperCache or W3 Total Cache) when updating so that the code from the latest release is always in use. This will help you to avoid any potential errors.-
If there is a need to update the theme manually, please check "Manual Updates" from here: https://theme.co/apex/forum/t/setup-updating-your-themes-and-plugins/62
Please let us know how it goes.