Because the administration page shows an error complaining about the access to $lang property being restricted.
The root cause is the transformation of the inc/plugin.php class between "Frusterick Manners" and "Greebo", in which the lang property has become protected.
Correction
I've moved the getByPrefix functionality into the action_plugin_refnotes: from there, the $lang property is accessible.
I've transformed the getByPrefix into a mere alias.
With this modification, the _RefNotes plugin seems compatible with "Greebo".
Why?
inc/plugin.php
class between "Frusterick Manners" and "Greebo", in which thelang
property has becomeprotected
.Correction
getByPrefix
functionality into theaction_plugin_refnotes
: from there, the$lang
property is accessible.getByPrefix
into a mere alias.With this modification, the _RefNotes plugin seems compatible with "Greebo".