app exception

gistfile1.txt

2015-08-05 12:23:48.176 ZettaKit[2904:445915] -[__NSCFNumber isEqualToString:]: unrecognized selector sent to instance 0xb000000000000473
2015-08-05 12:23:48.183 ZettaKit[2904:445915] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFNumber isEqualToString:]: unrecognized selector sent to instance 0xb000000000000473'
*** First throw call stack:
(
	0   CoreFoundation                      0x0000000107f4cc65 __exceptionPreprocess + 165
	1   libobjc.A.dylib                     0x0000000109db0bb7 objc_exception_throw + 45
	2   CoreFoundation                      0x0000000107f540ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
	3   CoreFoundation                      0x0000000107eaa13c ___forwarding___ + 988
	4   CoreFoundation                      0x0000000107ea9cd8 _CF_forwarding_prep_0 + 120
	5   UIKit                               0x00000001089bdc7f -[UITableViewLabel setText:] + 81
	6   ZettaKit                            0x00000001074f67d1 -[ZIKDeviceViewController tableView:cellForRowAtIndexPath:] + 401
	7   UIKit                               0x000000010873f9e8 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 508
	8   UIKit                               0x000000010871e208 -[UITableView _updateVisibleCellsNow:isRecursive:] + 2853
	9   UIKit                               0x0000000108734869 -[UITableView layoutSubviews] + 210
	10  UIKit                               0x00000001086be9eb -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 536
	11  QuartzCore                          0x000000010c5e9ed2 -[CALayer layoutSublayers] + 146
	12  QuartzCore                          0x000000010c5de6e6 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
	13  QuartzCore                          0x000000010c5de556 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
	14  QuartzCore                          0x000000010c54a86e _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 242
	15  QuartzCore                          0x000000010c54ba22 _ZN2CA11Transaction6commitEv + 462
	16  QuartzCore                          0x000000010c54c0d3 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 89
	17  CoreFoundation                      0x0000000107e7fca7 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
	18  CoreFoundation                      0x0000000107e7fc00 __CFRunLoopDoObservers + 368
	19  CoreFoundation                      0x0000000107e75a33 __CFRunLoopRun + 1123
	20  CoreFoundation                      0x0000000107e75366 CFRunLoopRunSpecific + 470
	21  GraphicsServices                    0x000000010c112a3e GSEventRunModal + 161
	22  UIKit                               0x000000010863e8c0 UIApplicationMain + 1282
	23  ZettaKit                            0x00000001074f77bf main + 111
	24  libdyld.dylib                       0x000000010a204145 start + 1
	25  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)