Hi, Simon.
Hit the same problem after plugins upgrate today. MP3 player asked for update today (and few others, I don’t remember the names) now player stopped working.
Following plugins are active (maybe they conflict?):
– Akismet
– Black Studio TinyMCE Widget
– CloudFlare
– Contact Form 7
– Custom 404 Pro
– HC Custom WP-Admin URL
– MNKY | Theme Core Extend
– MP3-jPlayer
– Remove query strings from static resources
– SiteOrigin Widgets Bundle
– WPBakery Visual Composer
– WP Google Analytics Events
– WP Super Cache
– Yoast SEO
Is it a known issue? Any advise?
Thanks in advance!