WordPress Speed Up Service | WordPress Website Maintenance Packages Reply To: Wordpress 4.9.x: Editing Themes/Plugins (Unable to communicate error) temp fixes, by BearlyDoug @clorith, thank you for helping me narrow down the culprit. I’ll let my customer know the results of the findings (The theme developer has not released an update, as of yet, so the timing might be good here). If you’d like, I can also get you a copy of the theme itself. For now, I’ve got a temp fix in place (noted above). To everyone else, again, swapping files with an older version of WordPress should be your absolute last resort in this situation. Reply To: Wordpress 4.9.x: Editing Themes/Plugins (Unable to communicate error) temp fixes