title: Can't delete a programmatically created calendar from the user interface
body: <p>Yes, I have messed with creating calendars, and I could delete all the instances created but one. I just can't delete it from the user interface, I can edit ti but pressing "delete Calendar" has no effect and no warning.</p>
  
  <p>What can I do? It doesn't really matter as I am on my development device, but really I'd like to get to the bottom of this as it could have an impact on the final app.</p>