I'm getting the following error 'Fatal error: Class 'Sendy' not found' when registering a new user through the app I'm developing. It works fine if I register the user on the website, but not through the app, so I'm wondering what files I might need to include in the app's api so that Class Sendy is defined? It looks like it is defined in libraries/sendy.php, but I'm not sure how to get it working from outside Joomla. Can you give me any pointers? Currently I have had to disable the user plugin to get the app registration to work.