title: xcode having error Thread 1:Program received signal 'SIGABRT'
body: <p>I have a piece of code related to MapKit which works fine on my iMac but errors out on my MacBook logging,</p>
  
  <pre><code>Thread 1:Program received signal 'SIGABRT'
  </code></pre>
  
  <p>and here is the entire log,</p>
  
  <pre><code>GNU gdb 6.3.50-20050815 (Apple version gdb-1518) (Sat Feb 12 02:52:12 UTC 2011)
  Copyright 2004 Free Software Foundation, Inc.
  GDB is free software, covered by the GNU General Public License, and you are
  welcome to change it and/or distribute copies of it under certain conditions.
  Type "show copying" to see the conditions.
  There is absolutely no warranty for GDB.  Type "show warranty" for details.
  This GDB was configured as "x86_64-apple-darwin".Attaching to process 2416.
  2011-06-08 09:58:31.312 iCodeBlogMap[2416:207] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[&lt;iCodeBlogMapViewController 0x5b3f830&gt; setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key tableview.'
  *** Call stack at first throw:
  (
      0   CoreFoundation                      0x00f545a9 __exceptionPreprocess + 185
      1   libobjc.A.dylib                     0x010a8313 objc_exception_throw + 44
      2   CoreFoundation                      0x00f544e1 -[NSException raise] + 17
      3   Foundation                          0x00798677 _NSSetUsingKeyValueSetter + 135
      4   Foundation                          0x007985e5 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 285
      5   UIKit                               0x0021430c -[UIRuntimeOutletConnection connect] + 112
      6   CoreFoundation                      0x00eca8cf -[NSArray makeObjectsPerformSelector:] + 239
      7   UIKit                               0x00212d23 -[UINib instantiateWithOwner:options:] + 1041
      8   UIKit                               0x00214ab7 -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 168
      9   UIKit                               0x000ca628 -[UIViewController _loadViewFromNibNamed:bundle:] + 70
      10  UIKit                               0x000c8134 -[UIViewController loadView] + 120
      11  UIKit                               0x000c800e -[UIViewController view] + 56
      12  UIKit                               0x0003bd42 -[UIWindow addRootViewControllerViewIfPossible] + 51
      13  iCodeBlogMap                        0x00002057 -[iCodeBlogMapAppDelegate application:didFinishLaunchingWithOptions:] + 135
      14  UIKit                               0x00018c89 -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1163
      15  UIKit                               0x0001ad88 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 439
      16  UIKit                               0x00025617 -[UIApplication handleEvent:withNewEvent:] + 1533
      17  UIKit                               0x0001dabf -[UIApplication sendEvent:] + 71
      18  UIKit                               0x00022f2e _UIApplicationHandleEvent + 7576
      19  GraphicsServices                    0x0118d992 PurpleEventCallback + 1550
      20  CoreFoundation                      0x00f35944 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
      21  CoreFoundation                      0x00e95cf7 __CFRunLoopDoSource1 + 215
      22  CoreFoundation                      0x00e92f83 __CFRunLoopRun + 979
      23  CoreFoundation                      0x00e92840 CFRunLoopRunSpecific + 208
      24  CoreFoundation                      0x00e92761 CFRunLoopRunInMode + 97
      25  UIKit                               0x0001a7d2 -[UIApplication _run] + 623
      26  UIKit                               0x00026c93 UIApplicationMain + 1160
      27  iCodeBlogMap                        0x00001f99 main + 121
      28  iCodeBlogMap                        0x00001f15 start + 53
  )
  terminate called after throwing an instance of 'NSException'
  sharedlibrary apply-load-rules all
  Current language:  auto; currently objective-c
  (gdb) 
  </code></pre>
  
  <p>How can I fix this error?</p>