I recently installed some plugins to help page speed- Smush Pro and Hummingbird Pro. When I try to edit a page in cornerstone it does not load the content in the preview only the header and footer with nothing in between.
I deleted both plugins and all others that were not necessary. It was loading fine before I installed them. I deleted from my database and check to make sure the rules were gone in the ht access.
The previewer editor is still not loading. The Header and Footer builder loads fine and shows the content of the page but when I go to edit the content only the header and footer show up.

