EXC_BAD_ACCESS管理对象的NSArray（核心数据）

Something strange is going on with my iphone app. I am using Core Data to store data in a SQLite database. The first time after my app starts up I try to read a table to return all of the rows to fill a UITableView with a list of things for the user to select from. If they chose the top item in the list I get a EXC_BAD_ACCESS exception. If they choose any other item everything seems OK. Here is the code sample: Sport and Team are NSManagedObjects. sports is an NSArray of Sport objects fetched using an NSFetchedResultsController (fetchedObjects). I can display the list of objects fine in the UITableView (I use the same array for the cellForRowAtIndexPath() call without any problemSomething strange is going on with my iphone ap