I have a trouble when I want to open a youtube video with fancy-box.
I just see the loading animation.
I checked the settings, the class...
I even disabled the loading of some scripts in jquery in the file 'easy-fancybox.php" in the endqueue because they were redundant with some of my theme (LeanBiz d'elegantthemes)
But if I want to open a picture it works !!
Any idea ?