I've installed WP-UI and it works fine.
However, in a Page/Post edit page, the add media button does not work. Also I noticed that the menus of the left sidebar (wordpress backend - e.g. dashboard / settings / appearance / etc.) do not work either (do not get opened).
When deactivating the plugin, everything works just fine.
What might cause this problem ? is it JS related ?
Thanks a lot in advance,