Hi, we have to update an older side running on X 4.0.7. Updating the theme is no option (and doesn´t work - no change to get the api key on that old link presented within the X wp section). so we manually updated the cornerstone (as the old one didn´t work anymore - delete and save didn´t work no more on a wp 4.9.9).
the manual cornerstone update from 1.x to 3.5.4 did work BUT the editor doesn´t load anymore. there is this huge loading indicator but nothing happens. any ideas how to get the cornerstone edit feature to work on this kind of configuration?
wp 4.9.9. / X 4.0.7 / cornerstone 1.x manual FTP upgrade to 3.5.4