在ios 6中，应用日历功能已经失效

In the app I am currently developing there is interaction between the user and the users calendar, like what happens in many apps, very standard stuff. It was working fine until I upgrade to ios 6. I am now faced with the "This app does not have access to your calendars. You can enable access in Privacy Settings" dialog when I try to perform those same calendar functions yet my app does not appear on the devices calendar privacy settings. Is there some new api I need to use in order to ask the user to grant access?In the app I am currently developing there is i