I’m having the same issue. I’m running WP 3.8.1, ACF 4.3.4 + Repeater Field 1.1.1. No console errors. The add media button appears (and works!) but no WYSIWYG.
I’ve deactivated all plugins and reactivated only ACF + repeater. No change.
WordPress is installed in a subdirectory, but that’s nothing new I guess.
I’ve noticed problems on some other of my sites too. Did they already switch to Tiny MCE 4.0 in 3.8.1? Might that be causing the problem. I know the API has changed…
