'remove_menu_page' causes a Warning when 'Edit Image'

[carlos_a_sanz]

Calling remove_menu_page function on a admin_init hook causes this warning:

Warning: Invalid argument supplied for foreach() in /users/knut/workspace/adlerfresneda.com/htdocs/dev/wp-admin/includes/plugin.php on line 1261

This occurs when [Edit Image] has tightened on Media section and MediaUpload popup, therfore, the image for editing does not load.

[nacin]

Admin menu functions such as add_menu_page(), add_submenu_page(), remove_menu_page(), and remove_submenu_page(), need to happen on the admin_menu hook, not the admin_init hook.

The admin_init hook fires in some situations where there is no UI for which a menu will be built -- for example, the media popup, or admin-ajax.

[SergeyBiryukov]

#23767 was marked as a duplicate.

[SergeyBiryukov]

#43714 was marked as a duplicate.