Core Data Bindings Not Working

Cocoa Programming for OS X (5th Edition) 13. Basic Core Data
1

After setting up and running the CarLot app in Chapter 13, I get this in the console and the window does not show up. I apparently missed a binding. How can I figure out what I did wrong? Thanks!!

2015-08-03 23:45:10.143 CarLot[3489:2250566] [<NSIndexSet 0x608000029f80> valueForUndefinedKey:]: this class is not key value coding-compliant for the key se.
2015-08-03 23:45:10.232 CarLot[3489:2250566] [<NSIndexSet 0x608000029f80> valueForUndefinedKey:]: this class is not key value coding-compliant for the key se.
2015-08-03 23:45:19.840 CarLot[3489:2250566] [<NSIndexSet 0x608000029f80> valueForUndefinedKey:]: this class is not key value coding-compliant for the key se.
2015-08-03 23:45:38.132 CarLot[3489:2250566] [<NSIndexSet 0x608000029f80> valueForUndefinedKey:]: this class is not key value coding-compliant for the key se.
2015-08-03 23:45:40.420 CarLot[3489:2250566] [<NSIndexSet 0x608000029f80> valueForUndefinedKey:]: this class is not key value coding-compliant for the key se.
2015-08-03 23:45:43.400 CarLot[3489:2250566] An uncaught exception was raised
2015-08-03 23:45:43.400 CarLot[3489:2250566] [<NSIndexSet 0x608000029f80> valueForUndefinedKey:]: this class is not key value coding-compliant for the key se.
2015-08-03 23:45:43.556 CarLot[3489:2250566] (
0 CoreFoundation 0x00007fff8a1bc03c __exceptionPreprocess + 172
1 libobjc.A.dylib 0x00007fff9549a76e objc_exception_throw + 43
2 CoreFoundation 0x00007fff8a1bbbd9 -[NSException raise] + 9
3 Foundation 0x00007fff89989cc5 -[NSObject(NSKeyValueCoding) valueForUndefinedKey:] + 226
4 Foundation 0x00007fff8985ec3b -[NSObject(NSKeyValueCoding) valueForKey:] + 385
5 Foundation 0x00007fff89871951 -[NSObject(NSKeyValueCoding) valueForKeyPath:] + 324
6 Foundation 0x00007fff8987191d -[NSObject(NSKeyValueCoding) valueForKeyPath:] + 272
7 AppKit 0x00007fff8e150b56 -[NSBinder valueForBinding:resolveMarkersToPlaceholders:] + 164
8 AppKit 0x00007fff8e207179 -[NSTableBinder _handleContentChange:] + 168
9 AppKit 0x00007fff8e206f2b -[NSTableBinder observeValueForKeyPath:ofObject:change:context:] + 57
10 AppKit 0x00007fff8e148621 -[NSObject(NSKeyValueBindingCreation) bind:toObject:withKeyPath:options:] + 758
11 AppKit 0x00007fff8e00afa6 -[NSIBObjectData nibInstantiateWithOwner:options:topLevelObjects:] + 1065
12 AppKit 0x00007fff8dfea0e5 loadNib + 384
13 AppKit 0x00007fff8dfe960b +[NSBundle(NSNibLoading) _loadNibFile:nameTable:options:withZone:ownerBundle:] + 313
14 AppKit 0x00007fff8e198bf7 +[NSBundle(NSNibLoadingInternal) _loadNibFile:externalNameTable:options:withZone:] + 150
15 AppKit 0x00007fff8e19899d -[NSWindowController loadWindow] + 313
16 AppKit 0x00007fff8e193b65 -[NSWindowController window] + 80
17 AppKit 0x00007fff8e1a5bd2 -[NSWindowController showWindow:] + 36
18 AppKit 0x00007fff8e1bd48a -[NSDocument showWindows] + 93
19 AppKit 0x00007fff8e195bc9 -[NSDocumentController openUntitledDocumentAndDisplay:error:] + 470
20 AppKit 0x00007fff8e1bd114 -[NSDocumentController newDocument:] + 36
21 libsystem_trace.dylib 0x00007fff948cecd7 _os_activity_initiate + 75
22 AppKit 0x00007fff8e233eb1 -[NSApplication sendAction:to:from:] + 452
23 AppKit 0x00007fff8e233c4e -[NSMenuItem _corePerformAction] + 382
24 AppKit 0x00007fff8e23397c -[NSCarbonMenuImpl performActionWithHighlightingForItemAtIndex:] + 114
25 libsystem_trace.dylib 0x00007fff948cecd7 _os_activity_initiate + 75
26 AppKit 0x00007fff8e2fab00 -[NSMenu performActionForItemAtIndex:] + 131
27 AppKit 0x00007fff8e2faa66 -[NSMenu _internalPerformActionForItemAtIndex:] + 35
28 AppKit 0x00007fff8e2fa8b2 -[NSCarbonMenuImpl _carbonCommandProcessEvent:handlerCallRef:] + 107
29 AppKit 0x00007fff8e21bd6b NSSLMMenuEventHandler + 724
30 HIToolbox 0x00007fff915f3b6c _ZL23DispatchEventToHandlersP14EventTargetRecP14OpaqueEventRefP14HandlerCallRec + 1260
31 HIToolbox 0x00007fff915f2fae _ZL30SendEventToEventTargetInternalP14OpaqueEventRefP20OpaqueEventTargetRefP14HandlerCallRec + 386
32 HIToolbox 0x00007fff91608cb6 SendEventToEventTarget + 40
33 HIToolbox 0x00007fff91642f45 _ZL18SendHICommandEventjPK9HICommandjjhPKvP20OpaqueEventTargetRefS5_PP14OpaqueEventRef + 428
34 HIToolbox 0x00007fff91680b8d SendMenuCommandWithContextAndModifiers + 59
35 HIToolbox 0x00007fff91680b30 SendMenuItemSelectedEvent + 188
36 HIToolbox 0x00007fff91680a09 ZL19FinishMenuSelectionP13SelectionDataP10MenuResultS2 + 96
37 HIToolbox 0x00007fff91681481 _ZL14MenuSelectCoreP8MenuData5PointdjPP13OpaqueMenuRefPt + 702
38 HIToolbox 0x00007fff916810fe _HandleMenuSelection2 + 446
39 AppKit 0x00007fff8e139ce0 _NSHandleCarbonMenuEvent + 277
40 AppKit 0x00007fff8e070bfd _DPSNextEvent + 1828
41 AppKit 0x00007fff8e06fe58 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 346
42 AppKit 0x00007fff8e065af3 -[NSApplication run] + 594
43 AppKit 0x00007fff8dfe2244 NSApplicationMain + 1832
44 CarLot 0x000000010000482d main + 109
45 libdyld.dylib 0x00007fff91dd25c9 start + 1
46 ??? 0x0000000000000003 0x0 + 3
)

2

Do you have a property named se?

3

Not that I can see, I started from the project template like the book said and all I did was Core Data bindings. Oh, wait… Yes. When binding the selectionIndexes, I must have inadvertently tried to set Controller Key in the Model Key Path field.

One other thing I should mention: I named the Array Controller CarL ( L - label ) so I could see how the controller was used in the context of IB in contrast to the Model. I don’t see how that could have made any difference.

Thanks!!