I have paid for and download the Core+ plug in package. I have unzipped this and uploaded each separate plug in to the site - apart from All-in-one-event-calender_2.5.7 because the current live version on my site is 2.5.8
As per http://time.ly/document/user-guide/manage-add-ons/front-end-post-form-add/, when I go to Events_Settings_Add-ons, all I see is twitter and extended view.
Am I missing a plug in in the package? Do I need to install 2.5.7? Should I delete my current 2.5.8?