Hello @jonathan2,
Thanks for writing in! Your SIRV plugin should work with the latest version of the theme with no issues. Just make sure that every thing is up to date.
Our latest versions are:
- Pro theme 2.3.5
- X theme 6.3.5
- Cornerstone 3.3.5
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.-
Please let us know how it goes.