I am on chapter 32, before “Adding the web view”.
my exercise app have some error message like below.
How can I this problem?
I could not found my fault.
3762 bytes, HTTP 200.
Got courses: [<RanchForecastSplit.Course: 0x600000267540>, <RanchForecastSplit.Course: 0x600000267780>, <RanchForecastSplit.Course: 0x6000002677c0>, <RanchForecastSplit.Course: 0x600000267840>, <RanchForecastSplit.Course: 0x600000267880>, <RanchForecastSplit.Course: 0x600000267800>, <RanchForecastSplit.Course: 0x6000002678c0>, <RanchForecastSplit.Course: 0x600000267900>, <RanchForecastSplit.Course: 0x600000267940>, <RanchForecastSplit.Course: 0x600000267980>]
2015-07-14 17:16:36.556 RanchForecastSplit[1178:405214] -[RanchForecastSplit.Course copyWithZone:]: unrecognized selector sent to instance 0x600000267540
2015-07-14 17:16:36.556 RanchForecastSplit[1178:405214] -[RanchForecastSplit.Course copyWithZone:]: unrecognized selector sent to instance 0x600000267540
2015-07-14 17:16:36.559 RanchForecastSplit[1178:405214] (
0 CoreFoundation 0x00007fff8953903c __exceptionPreprocess + 172
1 libobjc.A.dylib 0x00007fff88af176e objc_exception_throw + 43
2 CoreFoundation 0x00007fff8953c0ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x00007fff89481e24 forwarding + 1028
4 CoreFoundation 0x00007fff89481998 _CF_forwarding_prep_0 + 120
5 AppKit 0x00007fff8f387dea -[NSCell _setContents:] + 74
6 AppKit 0x00007fff8f387cc0 -[NSCell setObjectValue:] + 484
7 AppKit 0x00007fff8f3878af -[NSTextFieldCell setObjectValue:] + 88
8 AppKit 0x00007fff8f558219 -[_NSPlaceholderTextFieldPlugin showValue:inObject:] + 110
9 AppKit 0x00007fff8f4ad221 -[NSValueBinder _adjustObject:mode:observedController:observedKeyPath:context:editableState:adjustState:] + 463
10 AppKit 0x00007fff8f4acfbf -[NSValueBinder _observeValueForKeyPath:ofObject:context:] + 276
11 AppKit 0x00007fff8f558101 -[NSTextValueBinder _observeValueForKeyPath:ofObject:context:] + 43
12 Foundation 0x00007fff8c61c0f3 NSKeyValueNotifyObserver + 382
13 Foundation 0x00007fff8c628d68 NSKeyValueDidChange + 463
14 Foundation 0x00007fff8c5e197d -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:] + 118
15 AppKit 0x00007fff8f4dc66d -[NSTableRowData _addViewToRowView:atColumn:row:] + 600
16 AppKit 0x00007fff8f4dc27a -[NSTableRowData _addViewsToRowView:atRow:] + 184
17 AppKit 0x00007fff8f4da9ad -[NSTableRowData _initializeRowView:atRow:] + 373
18 AppKit 0x00007fff8f4d9ad2 -[NSTableRowData _addRowViewForVisibleRow:withPriorView:] + 396
19 AppKit 0x00007fff8f5799d1 -[NSTableRowData _addRowViewForVisibleRow:withPriorRowIndex:inDictionary:withRowAnimation:] + 254
20 AppKit 0x00007fff8f5797a3 -[NSTableRowData _unsafeUpdateVisibleRowEntries] + 1856
21 AppKit 0x00007fff8f578fc7 -[NSTableRowData updateVisibleRowViews] + 230
22 AppKit 0x00007fff8f57ee82 -[NSTableView viewWillDraw] + 178
23 AppKit 0x00007fff8f425fa1 -[NSView(NSInternal) _sendViewWillDrawAndRecurse:] + 535
24 AppKit 0x00007fff8f397ae1 -[NSView(NSLayerKitGlue) _layoutSublayersOfLayer:] + 142
25 QuartzCore 0x00007fff85fea414 -[CALayer layoutSublayers] + 219
26 AppKit 0x00007fff8f397a3c _NSBackingLayerLayoutSublayers + 158
27 QuartzCore 0x00007fff85fe9ff8 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 366
28 QuartzCore 0x00007fff85fe9e76 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
29 QuartzCore 0x00007fff85fe9612 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 242
30 QuartzCore 0x00007fff85fe93ae _ZN2CA11Transaction6commitEv + 390
31 QuartzCore 0x00007fff85ff7f19 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 71
32 CoreFoundation 0x00007fff89455127 CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION + 23
33 CoreFoundation 0x00007fff89455080 __CFRunLoopDoObservers + 368
34 CoreFoundation 0x00007fff89446bf8 CFRunLoopRunSpecific + 328
35 HIToolbox 0x00007fff8d89956f RunCurrentEventLoopInMode + 235
36 HIToolbox 0x00007fff8d8992ea ReceiveNextEventCommon + 431
37 HIToolbox 0x00007fff8d89912b _BlockUntilNextEventMatchingListInModeWithFilter + 71
38 AppKit 0x00007fff8f3c98ab _DPSNextEvent + 978
39 AppKit 0x00007fff8f3c8e58 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 346
40 AppKit 0x00007fff8f3beaf3 -[NSApplication run] + 594
41 AppKit 0x00007fff8f33b244 NSApplicationMain + 1832
42 RanchForecastSplit 0x000000010000904d main + 109
43 libdyld.dylib 0x00007fff8ffaa5c9 start + 1
)
I haven’t come across this error yet, but I would start by double-checking your table view bindings. Make sure that you haven’t accidentally bound the Text Field Cell. You should only bind the Text Field (not its cell).