Error when saving in Cornerstone

I am getting an error message when exiting Cornerstone after clicking the Save button. I get the success message (i.e… Yippee) but when I try to exit I get the error message:

“You have unsaved changes that will be lost if you continue…”

If I do exit Cornerstone and then go back in, my changes have actually been saved but I don’t understand why I am getting the error message?

I think I have narrowed it down to when I add a responsive text class in the “Settings” tab. If I remove this responsive text class, it does not give me the error message. As soon as I add it in I get the error message after saving and trying to exit. I have also noticed the error message “Loading the preview took longer than expected. There may be script conflicts” a few times on the top right of the page. I’m not sure if this is related.

My URL is


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I see the issue. There’s a problem with your WordPress setup though. Some resource are blocked due to CORs policy/ Some resource are loaded from and your site is Please contact your host to fix this.


Can you please tell me which resources you are referring to specifically so I know what to tell my host?
Thank you.

Hi There,

As seems you are having issue with CORS, please refer to this post :

Hope it helps

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