2011-12-12 12:18:38.761 TestApp[7397:707] Cannot perform operation without a managed object context
2011-12-12 12:18:38.809 TestApp[7397:707] (
	0   CoreFoundation                      0x00007fff894ca286 __exceptionPreprocess + 198
	1   libobjc.A.dylib                     0x00007fff8c820d5e objc_exception_throw + 43
	2   CoreFoundation                      0x00007fff894ca0ba +[NSException raise:format:arguments:] + 106
	3   CoreFoundation                      0x00007fff894ca044 +[NSException raise:format:] + 116
	4   AppKit                              0x00007fff885988b8 -[_NSManagedProxy _managedObjectContext] + 69
	5   AppKit                              0x00007fff8859882a -[_NSManagedProxy _persistentStoreCoordinator] + 23
	6   AppKit                              0x00007fff885987a5 -[_NSManagedProxy _entity] + 47
	7   AppKit                              0x00007fff885984db -[_NSManagedProxy fetchRequestWithSortDescriptors:limit:] + 93
	8   AppKit                              0x00007fff8838aa09 -[NSArrayController(NSManagedController) defaultFetchRequest] + 89
	9   AppKit                              0x00007fff8859a626 -[NSObjectController(NSManagedController) _fetchRequestForPerformingFetch] + 18
	10  AppKit                              0x00007fff8859a82e -[NSObjectController(NSManagedController) _executeFetch:didCommitSuccessfully:actionSender:] + 68
	11  AppKit                              0x00007fff8877ab05 _NSSendCommitEditingSelector + 54
	12  AppKit                              0x00007fff88438b7e -[NSController _controllerEditor:didCommit:contextInfo:] + 188
	13  CoreFoundation                      0x00007fff894bc20c __invoking___ + 140
	14  CoreFoundation                      0x00007fff894bc0a4 -[NSInvocation invoke] + 132
	15  CoreFoundation                      0x00007fff894bc274 -[NSInvocation invokeWithTarget:] + 52
	16  Foundation                          0x00007fff87d7225a __NSFireDelayedPerform + 392
	17  CoreFoundation                      0x00007fff8947ef84 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
	18  CoreFoundation                      0x00007fff8947ead6 __CFRunLoopDoTimer + 534
	19  CoreFoundation                      0x00007fff8945f471 __CFRunLoopRun + 1617
	20  CoreFoundation                      0x00007fff8945eae6 CFRunLoopRunSpecific + 230
	21  HIToolbox                           0x00007fff85ce63d3 RunCurrentEventLoopInMode + 277
	22  HIToolbox                           0x00007fff85ced58f ReceiveNextEventCommon + 181
	23  HIToolbox                           0x00007fff85ced4ca BlockUntilNextEventMatchingListInMode + 62
	24  AppKit                              0x00007fff880c53f1 _DPSNextEvent + 659
	25  AppKit                              0x00007fff880c4cf5 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 135
	26  AppKit                              0x00007fff880c162d -[NSApplication run] + 470
	27  AppKit                              0x00007fff8834080c NSApplicationMain + 867
	28  TestApp                          0x0000000100001d12 main + 34
	29  TestApp                          0x0000000100001ce4 start + 52
}