Hi,
I’m having similar problems to others with Visual Composer after upgrading WordPress to 4.5 today – the front-end of the site works fine, but VC doesn’t load the elements in the back-end, just shows the spinning loader.
I have upgraded the VC plugin to the latest (and upgraded the Slider Revolution plugin too because there are possible security issues with the one bundled with the theme).
Please help as soon as possible, my customer is screaming to go live with the site.
Thanks in advance …
Tim