Custom Section Name Crashing NSFetchedResultsController

Question

I have a managed object with a dueDate attribute. Instead of displaying using some ugly date string as the section headers of my UITableView I created a transient attribute

Answer 1

The crash is being caused by the NSFetchedResultsController not knowing about the "done" category before hand and therefore crashing. I have seen this crash a few other times in other questions and with each one I recommend submitting a radar ticket to Apple. This is a bug in the NSFetchedResultsController.