I have a plugin which works well on several Moodle sites. It has custom functions, and uses core functions such as core_user_create_users. To do this, I login as administrator, and go to Site Administration > Plugins > Web services > External services > Functions, and there is an "Add Functions" link button which allows me to add functions. I'm trying to set it up on another site, and this site does not have the "Add Functions" link button. First time I've seen this. Using $release = '2.3.3 (Build: 20121112)'
Have any of you seen this before? Any ideas why "Add Functions" might be missing, and how I might restore it?