Hi all,

I've had two customer reports of the exception below.  My code is not in the 
backtrace, so I'm not sure how to figure this one out.  Anyone recognise 
anything here?


NSInvalidArgumentException

+[NSInvocation invocationWithMethodSignature:]: method signature argument 
cannot be nil

        0   CoreFoundation                      0x00007fff86cee7b4 
__exceptionPreprocess + 180
        1   libobjc.A.dylib                     0x00007fff87f36f03 
objc_exception_throw + 45
        2   CoreFoundation                      0x00007fff86cc2b8d 
+[NSInvocation invocationWithMethodSignature:] + 493
        3   CoreData                            0x00007fff81cadb42 
-[NSManagedObjectContext(NSEditorAndEditorRegistration) 
_sendCommitEditingSelectorToTarget:sender:selector:flag:contextInfo:delayed:] + 
82
        4   CoreData                            0x00007fff81cb06e3 
-[NSManagedObjectContext(NSEditorAndEditorRegistration) 
_managedObjectContextEditor:didCommit:contextInfo:] + 115
        5   AppKit                              0x00007fff802b0411 
_NSSendCommitEditingSelector + 61
        6   AppKit                              0x00007fff802b1d7f 
-[NSController _controllerEditor:didCommit:contextInfo:] + 199
        7   CoreFoundation                      0x00007fff86cc396c 
__invoking___ + 140
        8   CoreFoundation                      0x00007fff86cc383d 
-[NSInvocation invoke] + 141
        9   CoreFoundation                      0x00007fff86cdf711 
-[NSInvocation invokeWithTarget:] + 49
        10  Foundation                          0x00007fff80fee33c 
__NSFireDelayedPerform + 404
        11  CoreFoundation                      0x00007fff86c8abe8 
__CFRunLoopRun + 6488
        12  CoreFoundation                      0x00007fff86c88dbf 
CFRunLoopRunSpecific + 575
        13  HIToolbox                           0x00007fff826897ee 
RunCurrentEventLoopInMode + 333
        14  HIToolbox                           0x00007fff826895f3 
ReceiveNextEventCommon + 310
        15  HIToolbox                           0x00007fff826894ac 
BlockUntilNextEventMatchingListInMode + 59
        16  AppKit                              0x00007fff800edeb2 
_DPSNextEvent + 708
        17  AppKit                              0x00007fff800ed801 
-[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155
        18  AppKit                              0x00007fff800b368f 
-[NSApplication run] + 395
        19  AppKit                              0x00007fff800ac3b0 
NSApplicationMain + 364

Thanks,

-- 
Sean



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